From St. Patrick, as quoted in Christ Within Me: Prayers and Meditations from the Anglo-Saxon Tradition:
I bind unto myself today
The power of God to hold and lead
His eye to watch, His might to stay,
His ear to harken to my need.
The wisdom of my God to teach,
His hand to guide, His shield to ward,
The word of God to give me speech,
His heavenly host to be my guard.
Christ be with me, Christ within me,
Christ behind me, Christ before me.
Christ beside me, Christ to win me,
Christ to comfort and restore me.
Christ beneath me, Christ above me,
Christ in quiet, Christ in danger,
Christ in hearts of all that love me,
Christ in mouth of friend and stranger.