The Reds won the game 1-0 thanks to a goal from Dirk Kuyt.
Greece defender Sotirios Kyrgiakos was sent off in the first half for Liverpool.
“Hopefully we’ll have more confidence for the next game against Arsenal, we are doing much better and we won today with 10 players so we cannot ask for more,” Benitez told Sky Sports.
“It was an amazing performance from the team.
“It’s a massive result for us. I felt the fans were behind the team working so hard and we were defending well and dangerous on the counter-attack.
“The commitment of our players was fantastic so everything was positive.”
