The Egypt international has featured in eight matches this season scoring once and providing one assist, with a knee injury keeping him out of action between mid-October and early September.
"[It's a] very important match of course," said Marmoush to the Manchester City website.
"For us a team, they are the ones who won the league last season, they are among the teams fighting for the title this year. So, for us they are one of the teams we must beat."
The 26-year-old could feature against the Reds and compatriot Mohamed Salah for the second time since joining the Cityzens during the 2024/25 season, losing that league match 2-0 at the Etihad.
"Of course, playing against Salah is a big thing for me. To be two Egyptian players in the Premier League, competing for the title, but I hope Manchester City win, we'll see," added Marmoush.
"We try to keep those things separate when we're in the national team – we always try to joke around and create an atmosphere away from football."
Man City will be looking to end a three-match losing streak against Liverpool in the Premier League.
Manchester City secured a second successive Premier League victory at home against Sunderland, Chelsea were held scoreless away to Bournemouth while Tottenham managed to beat Brentford.
Aston Villa delivered a major jolt to the Premier League title race as Emiliano Buendía struck deep into stoppage time to seal a 2-1 win over Arsenal on Saturday.
David Moyes urged Everton to stay on the front foot as they prepare for Saturday's Premier League meeting with Nottingham Forest at Hill Dickinson Stadium, where Sean Dyche made his first return since leaving the club nearly a year ago.
Mikel Arteta has said that Aston Villa's blistering run of form has made them genuine contenders in the Premier League title race, as Arsenal prepare for a high-stakes trip to Villa Park.
