AS says Ramos spoke to his team-mates on Thursday.
Coach Zinedine Zidane was not present for the chat at which Ramos tried to raise the morale of his team-mates.
"We are a win away from going through in the Champions League, it's up to us and we have to give everything, this is Real Madrid, gentlemen," said Ramos. "Together we have come through worse."
Luka Modric was also important.
"We have to be united and win the next games, we can do it," added the Croatian midfield veteran.