"You are lifted up upon the Angels, as upon horses..."

The Synaxis of the Holy Archangels (source)

 
You are lifted up upon the Angels, as upon horses, O Lover of mankind, and You show Your hand pulling their reins, and your riding works salvation to those who cry out without ceasing: Glory to Your power, O Lord.

You Who ineffably united the things of heaven with those on the earth, O Christ, you made into one Church both angels and men, and we without ceasing magnify You.
-From the Matins Canons to the Holy Archangels
(source)
 

Through the prayers of our Holy Fathers, Lord Jesus Christ our God, have mercy on us and save us! Amen!