"Luke was born in Antioch. In his youth, he excelled in his studies of Greek philosophy, medicine and art. During the ministry of the Lord Jesus on earth, Luke came to Jerusalem, where he saw the Savior face to face, heard His saving teaching and was witness to His miraculous works. Coming to belief in the Lord, St. Luke was numbered among the Seventy Apostles, and was sent out to preach. With Cleopas, he saw the resurrected Lord on the road to Emmaus (Luke 24). After the descent of the Holy Spirit, Luke returned to Antioch and there became a fellow worker of the Apostle Paul and traveled to Rome with him, converting Jews and pagans to the Christian Faith. Luke, the beloved physician, … greets you, writes the Apostle Paul to the Colossians. (Colossians 4:14). At the request of Christians, he wrote his Gospel in about the year 60. Following the martyrdom of the great Apostle Paul, St. Luke preached the Gospel throughout Italy, Dalmatia, Macedonia and other regions. He painted icons of the Most-holy Theotokos-not just one, but three-and icons of the Holy Apostles Peter and Paul. Hence, St. Luke is considered to be the founder of Christian iconography.
In old age, he visited Libya and Upper Egypt. From Egypt he returned to Greece, where he continued to preach and convert many with great zeal despite his old age. In addition to his Gospel, St. Luke wrote the Acts and dedicated both works to Theophilus, the governor of Achaia. Luke was eighty-four years old when the wicked idolaters tortured him for the sake of Christ and hanged him from an olive tree in the town of Thebes, in Boethia. The miracle-working relics of this wonderful saint were transported to Constantinople in the reign of Emperor Constantius, the son of Constantine." (taken from the Prologue of St. Nikolai: http://www.westsrbdio.org/prolog/prolog.htm; another account is available here: http://www.goarch.org/special/luke)
The tomb of St. Luke exists to this day in the city of Thebes in Northern Greece, where they continue to celebrate his memory. In fact, every year his tomb gives off a miraculous liquid that performs many miracles, and especially heals people with eye trouble.
(taken from: http://www.chrissihart.com/node/376)
Stichera Tone 8. What may we call you.
What may I name you, Apostle? Heaven, for you declared the glory of God. Lightning, for you irradiate the world by your illumination. Cloud, that rains down divine streams. Mixing-bowl overflowing with the inspired wine of wisdom, wine that makes hearts glad. Intercede that our souls may be saved.
Apolytikion. Tone 3.
Holy Apostle and Evangelist Luke, intercede with the merciful God to grant our souls forgiveness of sins.
(translated by Fr. Ephraim Lash: http://www.anastasis.org.uk/18october.htm)
Through the prayers of our Holy Fathers, Lord Jesus Christ our God, have mercy on us and save us! Amen!