Reading from the Synaxarion:

Nestor the Martyr of Thessaloniki

As mentioned in the account concerning Saint Demetrius (October 26), this Saint contested during the reign of Maximian, in the year 290.

Apolytikion of Great Martyr Nestor in the Fourth Tone

Thy Martyr, O Lord, in his courageous contest for Thee received the prize of the crowns of incorruption and life from Thee, our immortal God. For since he possessed Thy strength, he cast down the tyrants and wholly destroyed the demons' strengthless presumption. O Christ God, by his prayers, save our souls, since Thou art merciful.