The Cameroon international has struggled to find the net of late, scoring just six goals for the Nerazzurri since joining the club from Barcelona in the summer.
"Also this time I played with an injection, but I am much better and I am happy for this success in a difficult match against Fiorentina," Eto'o said.
"The three points are deserved and allow us to go eight points clear of Juventus who are still strong.
"In Turin we hope that it will be a beautiful game and that football wins. We have to keep our feet on the ground, but we are now a lot calmer.
"Inter have great players and we can beat anyone. I hope to have kept a goal for Saturday. I am crossing my fingers."