To prepare for a diplomatic career he completed the course of study at the
Pontifical Ecclesiastical Academy in 1951. He began his diplomatic career with a posting to Oceania. On 11 June 1969,
Pope Paul VI appointed Barbarito
Apostolic Nuncio to Haiti and named him
titular archbishop of
Fiorentino. He received his episcopal ordination from the hands of Cardinal
Amleto Giovanni Cicognani, with co-consecrators Archbishop
Agostino Casaroli and Bishop
Pasquale Venezia. On 5 April 1975, Pope Paul named him the Apostolic Pro-Nuncio in Niger and Senegal as well as Apostolic Delegate to
Mali,
Mauritania and
Guinea-Bissau. On 10 June 1978, Pope Paul appointed him
Apostolic Pro-Nuncio to Australia. On 21 January 1986
Pope John Paul II named him
Apostolic Pro-Nuncio to Great Britain. His title changed to Apostolic Nuncio to Great Britain on 13 April 1993. Pope John Paul accepted Barbarito's resignation on 31 July 1997. During his career, he was a member of the
Congregation for the Causes of Saints. He died on 12 March 2017 in
Pietradefusi and was buried in the church of Sant’Ippolisto in
Atripalda, the church where he was baptized. ==Honours and titles==