Kontakion

Thou wast a radiant lamp of Orthodoxy and the twofold defense of the land of Pskov, O father, uprooting polytheism and guiding the people to God. By thee was the house of the Mother of God strengthened and made glorious; and, adorned with the virtues, thou didst receive the crown of martyrdom. O venerable martyr Cornelius, be thou mindful of us, thy children, as thou prayest to the Lord.