After 2 years, he was chosen to pursue priestly studies at the Pontifical Urban University, Rome, where he received a master's degree in Philosophy and Theology.

He was ordained priest by Cardinal Agagiani, the Prefect of the Congregation for the Evangelization of Peoples at St. Peter's Basilica, Rome on 16 December 1966.

He then joined Fatima Mata National College, Kollam as an English instructor and the bursar, and later became its principal.

[3] In 2004, Roman founded the Pradhibhodayam education program, for scholastically gifted, but financially challenged members of the diocese.

In 2007, Roman inaugurated Jagat Jyoti Mandir (House of the Light of the Universe), which is a Christian church incorporating Hindu cultural elements.