Saint Irenaeus of Lyons

In your manner a participant,

And in your throne a successor of 

the Apostles,

You discovered action an entrance into visions,

O inspired one of God.

Therefore directing the Word of Truth,

You suffered for the faith even unto blood.

O Bishop and Martyr Irenaues,

Pray to Christ God that our souls may be saved!

(Troparion, Tone 4)

Give perfection to beginners, O Father; give intelligence to the little ones; give aid to those who are running their course. Give sorrow to the negligent; give fervor of spirit to the lukewarm. Give to the perfect a good consummation; for the sake of Christ Jesus our Lord. Amen.                                                                

(Prayer of Saint Irenaeus)

Pope Benedict XVI March 28, 2007 catechesis on Saint Irenaeus is helpful to read.