The Spanish centre-back was sent off in the second half for bringing down Neymar inside Los Blancos' box.
Lionel Messi successfully converted the subsequent penalty and went on to score from the spot again six minutes from time to win the match for the Catalan giants.
"It's always the same," Football Espana quotes Ramos as saying. "I didn't touch Neymar. But there's no point talking about it, it changes nothing.
"Everyone can see what happened today. We could have got something from the game but got nothing.
"There are some things you can't fight against. This was pre-meditated. "
Barcelona are a point behind Real, who are level on 70 points with Atletico Madrid at the top of the league table.