The ruthless Portugal forward broke the deadlock from the penalty spot and then scored a fine solo effort to make it 15 league goals in seven games for the season. Javier Hernandez, James Rodriguez and Isco were also on the scoresheet.
Real coach Carlo Ancelotti said: "It was a difficult game to prepare and we did well, showing discipline and focus. Now we have time to recover and prepare well for the match on Wednesday. We're on a good run and the team is doing really well.
"Goals don't come without effort, fight and focus. They all understood that and we come into this moment of the season in good physical and mental shape. All the players have shown that we have a very competitive squad. Those who have played less in the first part of the season have shown that they are in good shape and are motivated. They fit in well when they play in the team."
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