Angels

Byzantine Catholics have a very strong devotion to the angels. Very often we can see an angel depicted on the deaon's doors of the iconostasis - a reminder of the angel that was set to guard the entry to Paradise after man's fall (Gen. 3:24). 

The most prominent place where you will see the angels in the Byzantine tradition is on the liturgical fan called the "ripidion." It is a reminder of Isaiah'svision in the temple. This fan is carried in many processions, most notably during the "Great Entrance," as the congregation sings the "Cherubic Hymn."
 

Troparion to One's Guardian Angel

O Angel of God, my holy Guardian, keep my life in the fear of Christ God, strengthen my mind in the true way and wound my soul with heavenly love, so that guided by You, I may obtain the great mercy of Christ God. Glory to the Father, and to the Son, and to the Holy Spirit, now and ever, and to the ages of ages. Amen.