[3] Abdallah started his senior career at Shabab Sahel in 2004, helping them win the Lebanese Challenge Cup twice in a row (2014 and 2015).

Abdallah played twice for the Lebanon national team, both times in 2011: a friendly against Oman, and a 2014 World Cup qualifier against Bangladesh.

[4] In 2017–18 Abdallah helped Shabab Sahel win the Lebanese Second Division, and gain promotion back to the Premier League.

Abdallah made his senior international debut for Lebanon on 9 July 2011, in a friendly game against Oman; the match ended in a 1–0 home defeat.

[4] Abdallah's second, and final, game for Lebanon came on 28 July 2011, in a 2–0 defeat to Bangladesh in a 2014 FIFA World Cup qualifier match.