St. Isaac of the Monastery of Dalmatus —
No Troparion is given in the Menaion.
Kontakion, Tone VIII, "As first-fruits... " —
Burning with zeal in the Church of Christ as a faithful favorite of God,/
thou didst hold the reins of Valens, O venerable one,/ and didst speak to him in
prophecy concerning the captivity of the Church and his abominable death.//
Wherefore, ever pray for us who honor thee, O venerable Isaac.