The defender is looking for another shut-out tomorrow when France face reigning champions Spain in the Euro 2012 quarter-finals.
Koscielny, who is in line to replace the suspended Philippe Mexes, said: "All the ingredients are there for an unbelievable match.
"I know Torres well. As a defender, it's easier for me to play against a fixed centre-forward like Torres.
"Do we fear Spain? Yes and no. Spain have their qualities and so do we. But if you go all-out attack you're in trouble. You have to keep things tight."