[Pyro7480]

BTTT on the (New Calendar) feast of St. Leo the Great.

[Kolokotronis]

In Orthodoxy, his feast is celebrated on February 18.

Apolytikion:

Fourth Tone

The truth of things hath revealed thee to thy flock as a rule of faith, an icon of meekness, and a teacher of temperance; for this cause, thou hast achieved the heights by humility, riches by poverty. O Father and Hierarch Leo, intercede with Christ God that our souls be saved.

Kontakion:

Third Tone

Seated on the priestly throne, O great and glorious Leo, with the Holy Trinity's inspired and God-given doctrines thou didst stop the gaping mouths of spiritual lions and didst shine upon thy flock the light of God-knowledge, and art glorified now as a divine initiate of the sublime grace of God.

As an aside, the Orthodox Church does not understand the words of +Leo in the same manner the Latin Church apparently does.