Last year I posted this wonderful prayer as well.
St. Gertrude's Guardian Angel PrayerO most holy angel of God, appointed by God to be my guardian, I give you thanks for all the benefits which you have ever bestowed on me in body and in soul. I praise and glorify you that you condescended to assist me with such patient fidelity, and to defend me against all the assaults of my enemies. Blessed be the hour in which you were assigned me for my guardian, my defender and my patron. In acknowledgement and return for all your loving ministries to me, I offer you the infinitely precious and noble heart of Jesus, and firmly purpose to obey you henceforward, and most faithfully to serve my God. Amen.
Blessings to you and your homes,