Liverpool's Spanish striker has just returned from injury, but won't be deterred by the opposition's aggressive tactics.
"When a new player comes to the league with a certain reputation or profile, opposition teams and players look to make their mark against that player," he told LFC Magazine.
"Chelsea are one of our main rivals and in Spain we knew all about the fantastic games that we have played against them in the last few years. So yes I felt a little like they were testing me and pushing me to see how I would react to things.
"It was the same when I was just a young player coming through at Atletico. I received the same kind of attention then, too. You have to handle yourself in the correct manner. I just got on with things and showed I cannot be intimidated.
"If I had reacted in a different way when they were trying to upset me then every defender in the league would have seen it and they would have all been trying it. It would also have meant letting down my team-mates and I wouldn't want to do that.
"I just answered their questions the way I always will - I got on with playing for my team and I scored a goal. That is the best answer in those kind of situations. I take no notice of those kind of tactics."
