The hosts could have won it when Faycal Fajr's strike came back off the crossbar in the final few minutes. They were more than the value of their one point against Diego Simeone's title contenders.
It means the Rojiblancos, who are third in the table, could go behind Celta Vigo and Villarreal, depending on their results, and drop to fifth.
Here are the winners and losers from Friday night's clash.