Liverpool won 2-0, with Kelleher denying Kylian Mbappe from the penalty spot.
He later said, "I was confident and thankfully went the right way again.
"It is a big result. It is a massive result for us. We wanted to come out tonight and put on a performance and well done to the lads for doing that."
On Sunday's game against Manchester City: "I think confidence is high in the whole squad.
"Man City, we know they have had a tough few results but what a team. We expect a really tough test but this is good confidence for the team and we will go again."
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