Moroccan striker Ayoub El Kaabi scored the winning goal in the 116th minute that allowed Jose Luis Mendilibar's side to make history in the home of local rivals AEK Athens.
The Catalan side have 68 points, seven ahead of Atletico Madrid, who visit Alaves on Sunday, and 10 clear of fifth-placed Athletic Bilbao, who drew 1-1 at home to Granada on Friday.
Jose Mourinho said Tuesday that his experience of European glory will be no help to him as Roma are one step away from their first major continental crown.
Moroccan striker Ayoub El Kaabi scored the winning goal in the 116th minute that allowed Jose Luis Mendilibar's side to make history in the home of local rivals AEK Athens.
The Catalan side have 68 points, seven ahead of Atletico Madrid, who visit Alaves on Sunday, and 10 clear of fifth-placed Athletic Bilbao, who drew 1-1 at home to Granada on Friday.
Jose Mourinho said Tuesday that his experience of European glory will be no help to him as Roma are one step away from their first major continental crown.