Real’s advantage in the table, coming after Barca's draw away at Celta Vigo on Saturday, is their biggest since February and puts them within sight of their second league title in eight years.
"It's a very important win," said Benzema. "I can't say we don't look at Barcelona, of course we do. But we're focused on our own league. There are not many games left and every game now is a final."
In this photo shows Spanish club Real Madrid striker Karim Mostafa Benzema in action. File photo
Zinedine Zidane said Eden Hazard took a knock to his ankle.
"He took a big hit but it's just a knock I think," said Zidane.
By the time his side play at home to Getafe on Thursday they might even have the chance to move further clear, if in-form Atletico Madrid avoid defeat on Tuesday at Camp Nou.
Barcelona certainly have the harder run-in, with a resurgent Villarreal side to follow Atletico and then local rivals Espanyol, who have shown they might yet finish strong after a determined performance under new coach Franciso Rufete.