The Blues moved into the fifth round of the FA Cup with a 4-0 fourth round replay win over Brentford but Benitez has made it clear that qualifying for the Champions League is the main goal.
"The priority is to be in the top four, and if we can progress in the cup competitions until the end, then even better," he told reporters. "But I try to concentrate on one game at a time.
"I have a contract until the end of the season. I'm very happy to be here and working with this group of players, and I will try to win every game and see what happens.
"We knew they would be working hard, and we knew scoring the first goal could be the difference - they would be more open, and we would have more space. It was a question of time.
"They were working very hard in the first half, and we knew it would be hard to keep that intensity up against a team like us.
"We could have scored in the first half, but we're pleased to score four goals and create as many chances as we did."