At the "Jeux de la Francophonie", Jabbour finished behind countryfellows Salah Hissou and Brahim Lahlafi; this was one of three all-Moroccan podiums in this event at the Jeux de la Francophonie (the other being 1989: Saïd Aouita, Khalid Skah, Mohamed Issangar and 2001: Mohamed Amine, Abderrahim Goumri, Mohamed Saïd El Wardi). Jabbour benefited from the breadth in Moroccan running at the 1998 World Cross Country Championships, when he finished fifteenth in the short race and won a silver medal in the team competition. He also competed at the 1999 World Championships, but failed to reach the 5000 metres final.