Prayer to One's Guardian Angel

O holy angel of God, my guardian, intercede for me, a sinner, before the Lord. Wash away the iniquities of my soul, and forgive my many transgressions which I have committed today, this past night, and all the days of my life. Cover me with thy wings, that the evil demon may flee far from me; and pray for me to the Lord our God, that He may strengthen me in the fear of Him and make me a worthy servant of His goodness. Amen.