The Blues crashed out in the Capital One Cup semi-final against Swansea on Wednesday night, and next up face a short but potentially tricky trip to Griffin Park in the FA Cup fourth round.
Highly-rated Moore, 21, limbered up for the big game by saving a penalty in the Bees' 2-2 draw with Leyton Orient earlier this week.
And while expecting a busy afternoon against the likes of Frank Lampard, Demba Ba and Fernando Torres, Moore feels the League One side are capable of pulling off a shock.
"I think I will probably have a lot to do," he said.
"But it will be difficult for them to come here on a tricky pitch, the atmosphere in a tight stadium will be electric and we are confident we can get through."