The beautiful prayer of St Patrick, popularly known as "St Patrick's Breast-Plate", is supposed to have been composed by him in preparation for this victory over Paganism. The following is a literal translation from the old Irish text, written in March, year unknown, mid to end 5th century.
I bind to myself today The strong virtue of the Invocation of the Trinity: I believe the Trinity in the Unity The Creator of the Universe.
I bind to myself today The virtue of the Incarnation of Christ with His Baptism, The virtue of His crucifixion with His burial, The virtue of His Resurrection with His Ascension, The virtue of His coming on the Judgement Day.
I bind to myself today The virtue of the love of seraphim, In the obedience of angels, In the hope of resurrection unto reward, In prayers of Patriarchs, In predictions of Prophets, In preaching of Apostles, In faith of Confessors, In purity of holy Virgins, In deeds of righteous men.
I bind to myself today The power of Heaven, The light of the sun, The brightness of the moon, The splendour of fire, The flashing of lightning, The swiftness of wind, The depth of sea, The stability of earth, The compactness of rocks.
I bind to myself today God's Power to guide me, God's Might to uphold me, God's Wisdom to teach me, God's Eye to watch over me, God's Ear to hear me, God's Word to give me speech, God's Hand to guide me, God's Way to lie before me, God's Shield to shelter me, God's Host to secure me, Against the snares of demons, Against the seductions of vices.