From Pow-Wows, or Long Lost Friend, by John George Hoffman, (1820), we have a benediction for and against all enemies.
The cross of Christ be with me; the cross of Christ overcomes all water and every fire; the cross of Christ overcomes all weapons; the cross of Christ is a perfect sign and blessing to my soul. May Christ be with me and my body during all my life at day and at night.
Now I pray, I, [name], pray God the Father for the soul’s sake, and I pray God the Son for the Father’s sake, and I pray God the Holly Ghost for the Father’s and the Son’s sake, that the holy corpse of God may bless me against all evil things, words and works. The cross of Christ open unto me future bliss; the cross of Christ be with me, above me, before me, behind me, beneath me, aside of me and everywhere, and before all my enemies, visible and invisible; these all flee from me as soon as they but know or hear.
Enoch and Elias, the two prophets, were never imprisoned, nor bound, nor beaten and came never out of their power; thus no one of my enemies must be able to injure or attack me in my body or my life, in the name of God the Father, the Son, and the Holy Ghost. Amen.
From Pow-Wows, or Long Lost Friend, by John George Hoffman, (1820), we have this benediction against enemies, sickness and misfortune:
The blessing which came from heaven, from God the Father, when the true living Son was born, be with me at all times; the blessing which God spoke over the whole human race, be with me always.
The holy cross of God, as long and as broad as the one upon which God suffered his blessed, bitter tortures, bless me to-day and forever. The three holy nails which were driven through the holy hands and feet of Jesus Christ shall bless me to-day and forever. The bitter crown of thorns which was forced upon the holy head of Christ, shall bless me to-day and forever. The spear by which the holy side of Jesus was opened, shall bless me to-day and forever. The rosy blood protect me from all my enemies, and from everything which might be injurious to my body or soul or my worldly goods.
Bless me, oh ye five holy wounds, in order that all my enemies may be driven away and bound, while God has encompassed all Christendom. In this shall assist me God the Father, the Son and the Holy Ghost. Amen.
Thus must I be blessed as well and as valid as the cup and the wine, and the true, living bread which Jesus gave his disciples on the evening of Maunday Thursday. All those that hate you must be silent before me; their hearts are dead in regard to me; and their tongues are mute, so that they are not at all able to inflict the least injury upon me, or my house, or my premises: And likewise, all those who intend attacking and wounding me with their arms and weapons shall be defenseless, weak and conquered before me. In this shall assist me thee holy power of God, which can make all arms or weapons of no avail.
All this in the name of God the Father, the Son, and the Holy Ghost. Amen.
I have the power to bend a man,
to break his spirit and crush his plans.
I can make the world stand still,
I can make the frozen heart feel.
I can cure the sick and heal the mind,
but I can destroy and I can bind.
I can bring peace to a raging war,
or I can bring hate right to your door.
I can mend your battered pride,
I can make you die inside.
I am love and I am despair,
and all the things in the shadows there.
Yet with all the power I command,
I am tossed around like gains of sand.
Oh the good I could do if only I was heard,
such a massive thing, the power of a word.
~ Mystic Firefly
May the blessing of light be on you –
light without and light within.
May the blessed sunlight shine on you like a great peat fire,
so that stranger and friend may come and warm himself at it.
And may light shine out of the two eyes of you,
like a candle set in the window of a house,
bidding the wanderer come in out of the storm.
And may the blessing of the rain be on you,
may it beat upon your Spirit and wash it fair and clean,
and leave there a shining pool where the blue of Heaven shines,
and sometimes a star.
And may the blessing of the earth be on you,
soft under your feet as you pass along the roads,
soft under you as you lie out on it,
tired at the end of day;
and may it rest easy over you when,
at last, you lie out under it.
May it rest so lightly over you
that your soul may be out from under it quickly;
up and off and on its way to God.
—Ancient Celtic Blessing
“The bitter sorrows and the death of our dear Lord Jesus Christ shall prevail. Fire and wind and great heat and all that is within the power of these elements, I command thee, through the Lord Jesus Christ, who has spoken to the winds and the waters, and they obeyed him.
By these powerful words spoken by Jesus, I command, threaten, and inform thee, fire, flame, and heat, and your powers as elements, to flee forthwith, The holy, rosy blood of our dear Lord Jesus Christ may rule it. Thou, fire, and wind, and great beat, I command thee, as the Lord did, by his holy angels, command the great heat in the fiery oven to leave those three holy men, Shadrach and his companions, Meshach and Abednego, untouched, which was done accordingly.
Thus thou shalt abate, thou fire, flame, and great heat, the Almighty God having spoken in creating. the four elements, together with heaven and earth; Fiat! Fiat! Fiat! that is: It shall be in the name of God the Father, the Son, and the Holy Ghost. Amen.
From: Pow-Wows, or Long Lost Friend, by John George Hoffman, 
I will kindle this fire under the eyes of the Tuatha De Danann
under the eyes of Brigit daughter of the Dagda,
under the eyes of Aedh the bright one.
Without fear, jealousy or malice of any kind to anyone under the sun,
but with the light of the Goddess to protect me.
Goddess of the sun, kindle within me a fire of generosity and love to all:
To my friends, my kindred, my foes and kindle within me a fire of bravery,
eloquence and generosity of truth, strength and wealth,
of beauty, charm and grace, so that I may inspire with my words.
May this fire be blessed in the eyes of the Ancient
but ever-present Gods.
From: The Path of the Shaman
The hour of the dark moon draws near;
I hear the invoking words,
hear and appear
Chthonia, Enodia, Trioditis
I come unto the holy bliss.
This is a really nice Self Blessing. It was written with a feminine slant, but can be reworded to fit any gender.
Blessed am I – for I am the Goddess,
Blessed is my crown – for I am aware of myself,
Blessed is my brain – for I can think with reason and logic,
Blessed are my eyes – for I can see color and shape,
Blessed are my ears – for I can hear words and melody,
Blessed is my mouth – for I can kiss and talk and sing.
Blessed is my throat – for I can bridge between from within and without,
Blessed are my shoulders – for I can bear burdens,
Blessed are my arms – for I can reach out to you and my world,
Blessed are my breasts – for I can give nourishment and I can receive pleasure.
Blessed are my hands – for I can do and make and hold,
Blessed is my heart – for I beat the rhythm of the cosmos,
Blessed is my stomach – for I can feed my needs,
Blessed is my navel – for I am connected to my mother,
Blessed is my gut – for I can feel what I do not want,
Blessed is my womb – for I can generate new beginnings.
Blessed is my clitoris – for I can spin sweet energy,
Blessed is my vagina – for I can receive into myself,
Blessed is my anus – for I can rid myself of what is finished,
Blessed are my legs – for I can move in any direction,
Blessed are my feet – for I can stand firm on the Earth,
Blessed am I, for I am the Goddess.
Found at: Blessed Be Me
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