The teenager was given a starting role by Pep Guardiola under the floodlights and helped contribute to our fifth successive clean sheet across all competitions.
CITY+ | SIGN UP TO ACCESS EXCLUSIVE CONTENT
Erling Haaland struck his sixth hat-trick for the club, Julian Alvarez netted twice and Cole Palmer found the net in a clinical display to progress into the last four of the competition.
Lewis stressed the importance of the victory and is excited for the upcoming trip to Wembley Stadium.
"For me, it's been a dream my whole life to play at the stadium [Wembley].
"Hopefully we then progress to the final and win something there, that would be the pinnacle for me. Getting there in the first place is massive for me.
"It's massive to be able to score that many goals and also keep the clean sheet at the back. We're showing we're solid at the back and we're not conceding many chances."
The youngster reserved special praise for Haaland, who he labelled 'an absolute animal', and spoke about his delight at getting another first-team opportunity despite heavy competition for places, before providing his thoughts on the return of City legend Vincent Kompany in the Burnley dugout.
Watch every word of his post-match interview via the video at the top of the page.