Saint Athanasius the Great, Patriarch of Alexandria - Troparion & Kontakion
Troparion — Tone 3
You were a pillar of Orthodoxy, Hierarch Athanasius, / supporting the Church with divine doctrines; / you proclaimed the Son to be of one Essence with the Father, / putting Arius to shame. / Righteous father, entreat Christ God to grant us His great mercy.
Kontakion — Tone 2
You planted the dogmas of Orthodoxy / and eradicated the thorns of false doctrine; / you propagated the seeds of the Faith watered with the rain of the Spirit. / Therefore, we praise you, Righteous Athanasius.