Martyrs Gervasius, Nazarius, Protasius, and Celsus of Milan - Troparion & Kontakion
Troparion — Tone 4
Let us praise the fourfold company of martyrs: / Nazarius, Protase, Gervase and Celsus. / For they preached the Trinity to all / and by their contest dispelled the worship of idols. / Through their prayers, O Christ God, have mercy on us all.