Between the 6th and 2nd centuries BC, the town played an active role in these contacts. During the Third Mithridatic War, Phasis came under Roman control. It was where the Roman commander-in-chief Pompey, having crossed into Colchis from Iberia, met the legate Servilius, the admiral of his Euxine fleet in 65 BC. After the introduction of Christianity, Phasis was a seat of a Greek diocese, one of whose bishops, Cyrus, became a Patriarch of Alexandria between 630 and 641 AD. During the Lazic War between the Eastern Roman and Sassanid Iranian empires (542-562) Phasis was attacked, unsuccessfully, by Iranian soldiers.