Mourinho had told reporters after his team's 4-0 win against Lyon that he believed that other teams had been given easier draws in the Champions League
The 48-year-old even said that he had to look on the internet to find out where some of the teams in his group came from.
However, former Barca player and manager Cruyff said that people should be more respectful of their opponents before he had a pop at the former Chelsea boss.
"In every sport, you have to respect your teammates, your opponents and rivals," said the Dutchman.
"Honestly, no-one cares about what Mourinho says."
Madrid are currently third in the La Liga table, one point behind league leaders Barcelona.