Barcelona returned to victory in the championship, after defeating Girona 2-1, in the match valid for the ninth week in La Liga.
An important success, but with suffering for the Catalans, who only scored the winning goal at the end.
Pedri opened the scoring in the 13th minute, after an assist from Yamal, but the visitors equalized seven minutes later.
As the match was drawing to a close, Araujo appeared, who in the 93rd minute scored the second and winning goal for the Catalans.
Barcelona goes into "El Clasico" with a win against Real Madrid, a match that is scheduled for next week.
This three-pointer lifts Hansi Flick's team to the top of the standings with 22 points, 1 more than second-place Real, who have one more game to play.