This prayer is from St. Dominic (1170-1221), founder of the Dominicans or Order of Preachers in the medieval church.

May God the Father who made us bless us. 
May God the Son send his healing among us. 
May God the Holy Spirit move within us and give us eyes to see with, ears to hear with, and hands that your work might be done. 
May we walk and preach the word of God to all. 
May the angel of peace watch over us and lead us at last by God’s grace to the kingdom.

Amen.