Ramos will be suspended for the game with Valencia.
"Our pride for defending this shirt and this crest is hurt. We have to realise the importance of the badge we wear and live up to the greatness of this club," said the World Cup winner, whose side are now two points behind Barca in the standings.
"We cannot change the defeat. We are all to blame and we are committed to moving forward. Now more than ever we have to show the pride that has always identified Real Madrid.
"We mustn't forget the fact that we only dropped three points and that the season is very long and that things can change all the time in football. The world hasn't come to an end."
He added: "We have to recover from the defeat and stop lamenting. We now have an important game against a team that is having a good season.
"Football always gives you the chance for revenge, but we must now concentrate on Valencia and continue to do things well.
"We have to be more united than ever to push through this situation. The only thing left is to continue working hard and put pressure on our opponents in order to win titles."