Troparion - Tone 4
By your virtues as by rays of the sun you enlightened the unbelieving philosophers, and like the most bright moon you drove away the darkness of disbelief from those walking in the night; you convinced the queen, and also chastised the tyrant, God-summoned bride, bless-ed Katherine. You hastened with desire to the heavenly bridal chamber of the fairest fairest Bride-groom Christ, and you were crowned by Him with a royal crown; standing before Him with the angels, pray for us who keep your most sacred memory.
Kontakion - Tone 2
Let all of us who love to honor the martyrs form a great choir in praise of the most wise Katherine, for she preached Christ and trampled the serpent, despising the knowledge of the orators!