The following prayer is from Vespers for the feast:
Seeing the fruitful Vine hanging from the Tree of the Cross, pouring forth the wine of life and pardon, you drew near with the lips of your heart. Drinking there from, you were filled with joy as you wisely renounced the bitter wine of the unbelievers, for you preferred the better to the worse.
- 2nd sticheron from October Menaion (Sophia Press, 2nd edition)
By the prayers of St. Longinos may we all be daily edified by his conversion and come to profess our faith in Christ with the same sincerity.