"Arsenal will know that Torres is on fire and is scoring goals and will be a problem for them," said Benitez.
"Fernando also knows that if we play well he will score goals, so he will work hard for the team. As this is a European competition he wants to play well and score goals.
"He has a great mentality and is very competitive, but against the top sides he must be focused and have confidence in himself because against the best defenders it will be more difficult."