Slovenian Oblak made a string of memorable saves to keep the Spanish champions’ hopes of reaching the last four alive.
Real Madrid’s 3-0 win over Eibar earlier in the day means the European champions now trail Barca by just two points.
Rodriguez, sustained the injury in the league game against Sevilla in early February.
Bale struck a brace to end his drought and Real Madrid’s winless run with a 2-0 victory over Levante.
Real Madrid survived a major scare as they went through to the quarter-finals despite a 4-3 loss to Schalke at home.
Spanish league leaders Real Madrid lost 1-0 at Athletic Bilbao on Saturday, stumbling for a second straight week.
Real Madrid stumbled to a costly 1-1 draw with Villarreal at home on Sunday to tighten the La Liga title race.
Cristiano Ronaldo and Karim Benzema scored to give Real Madrid a 2-0 win at Elche on Sunday.
The world player of the year headed in after 26 minutes for his 73rd Champions League goal .
Real Madrid needed goals from Isoand Karim Benzema to beat a determined Deportivo La Coruna outfit.
Ancelotti described the 4-0 defeat at derby rivals Atletico Madrid on Saturday as his worst at the club.
Atleti thrash table toppers and most expensive team in world Real 4-0 to eat into lead.
Cristiano Ronaldo returns after two-game ban to help an otherwise injury stricken Real Madrid.
Benzema scored twice in the second half as Madrid beat Sociedad 4-1 to go four points clear on Saturday.
Ronaldo was suspended for two games on Wednesday for lashing out with a kick and punch against Cordoba.