"It is an interesting and challenging draw," said the Gunners boss.
"It is a big opponent and we play them three times [in a week] and you will not know what competition it is. All that you will know is it is Liverpool.
"They raise their game in the Champions League. We know we can beat them and therefore it is the form of the day that will be the decider. We will focus and concentrate to be at our best on the day.
"You know when you have four clubs from England in the quarter-final, you will have to play one or two at some stage.
"If you want to go to the final and win the final you have to get through that."