The Lintel above the Transfiguration Mosaic at Sant'Apollinare in Classe

Flanking the medallion with Christ are the symbols of the four evangelists: St. John's eagle, St. Matthew's angel, the lion of St. Mark, and the ox of St. Luke.

This image in full resolution
Detail: The right side
Detail: the Christ

View the entire Transfiguration mosaic
More of the four evangelists

Photographed at the church by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.