Venerable Theophanes the Confessor and Faster of Mount Diabenos - Troparion & Kontakion
Troparion — Tone 8
Champion of Orthodoxy, teacher of purity and of true worship, / the enlightener of the universe and the adornment of hierarchs: / all-wise father Theophanes, your teachings have gleamed with light upon all things. / Intercede before Christ God to save our souls.