I can't believe that Barcelona can beat Girona easily after what Girona has proven this season. Girona must be considered one of the best teams in La Liga with their achievements in the last 15 matches, so no one can underestimate them anymore even though Girona does not have a better squad than Barcelona. Of course, Xavi and his players know how dangerous Girona are, so they must really be able to do a great job against a team that has only lost 1 defeat in the last 15 matches so far.
It's not going to be an easy match for Barcelona but I believe they'll win. Girona don't defend, they're an attacking team and Barcelona don't have an issue playing teams that attack, they have a problem again teams that play low block.
Barcelona has a very good midfield and defense so they can contain the attack of Girona so it's left for the Barcelona attack to be clinical.
Girona have been good but they met Real Madrid and they lost 3-0. I think that's the only match they Girona did not score an goal so far this season. This shows that if they meet a team that is very superior they'll fumble.
A worry for Barcelona would be Lewandoski. He seems a shadow of himself. If he's clinical against Girona then it's a win for Barcelona.