To read about lives of St Gregory the Wonderworker of Neocaesarea, Venerable Nikon the Abbot of Radonezh (the Disciple of the Venerable Sergius) and other Orthodox Saints please visit this webpage on OCA.org:
Saints commemorated on November 17
Troparion — Tone 8
You became worthy of your name through your way of life: / through your vigilance in prayer and your constant constant works of mercy. / Therefore, O Father Gregory, beseech Christ God to enlighten our minds, / that we may not sleep in sin, which leads to death!
Kontakion — Tone 2
You received the power to perform miracles, / frightening the devils and healing the sick through your wonderworking. / All-wise Father Gregory, / your deeds truly entitle you to be called “Wonderworker”!