Raphinha, who had been linked with a move away from Barcelona, looked like he wanted to fight for his place at the club after helping it return to form with a 4-0 win over Real Betis.
Andreas Christensen gave Barcelona the lead, heading in Raphinha’s cross. Robert Lewandowski doubled their advantage with his 19th league goal of the season, turning in Jules Kounde’s delivery.
Raphinha scored his first goal since early March in the decisive third before half-time.
Xavi’s side dominated possession in the second half, but their only goal came from a Guido Rodriguez own goal. Lamine Yamal was able to come on for his first-team debut.
Barcelona have struggled of late, but they earned a win against Celta Vigo in their most recent La Liga match. It was a performance that suggests they can close out the season in style.