The Reds required a win and needed Lyon to grab at least a draw against Fiorentina in Italy and although they held their end of the bargain, the French club could not get what was needed.
"We had to do our job today. Our job was to win and we won but we couldn't control the other game," he added.
"To win today was the only thing we could do and we played well, with four or five clear chances.
"The main thing is to be ready for the next match, we have an important game on Sunday (against Everton)."
Benitez is confident that things will get better for Liverpool as the season goes on.
"I am 100% sure we will finish in the (Premier League's) top four. The team will play well when all the players are available so I am sure we will finish in the top four," he added.