Troparion of St Luke Tone 3
Holy Apostle and Evangelist Luke,/ intercede with our merciful God,/ that He may grant to our souls/ the forgiveness of our sins.
Kontakion of St Luke Tone 2
Let us praise holy Luke, the star of the Church,/ herald of piety and proclaimer of mysteries;/ for the Word Who alone knows the secrets of hearts/ has chosen him with Paul/ as a teacher of the nations.
Orthodox Church in America website:
The Holy Apostle and Evangelist Luke, was a native of Syrian Antioch, a companion of the holy Apostle Paul (Phil 1:24, 2 Tim 4:10-11), and a physician enlightened in the Greek medical arts. Hearing about Christ, Luke arrived in Palestine and fervently accepted the preaching of salvation from the Lord Himself. Included among the Seventy Apostles, St. Luke was sent by the Lord with the others to preach the Kingdom of Heaven during the earthly life of the Savior (Lk 10:1-3). After the Resurrection, the Lord Jesus Christ appeared to Sts. Luke and Cleopas on the road to Emmaus.