Torres has suffered a difficult start to the season and is an injury doubt for the derby this weekend. However, Reina is confident the striker will soon be firing on all cylinders once again.
"Fernando is one of the best strikers in the world," said the keeper.
"As soon as he is fit once again, and he's working on that, he will be shining once again for us.
"The team is good enough to start winning games. It's a difficult situation but we have to stick together and work hard to turn it around."