The Russian club was unlucky to go down 1-0 to the perennial European performers, leaving them with just three points from three group stage matches.
But with three games remaining and after such a forward showing, former Tottenham manager Ramos is hopeful his team can get enough points to progress to the knockout stage.
"We had our chances but we didn't take them," Ramos said.
"I think we had a very good first half and in the second half we had chances in the first 10 minutes.
"We made it very hard for them for an hour.
"We have lost but we still have three games and we are going to fight for our chances."