Manchester United striker Wayne Rooney admits they face a huge test against Liverpool's much-vaunted attack.
Luis Suarez and Daniel Sturridge have netted 45 goals between them.
"I think they are both fantastic players and obviously it is good to see Sturridge doing well because he has never really had a chance at his previous clubs," he said.
"Brendan Rodgers has given him a chance and he has taken it with both hands. That is good for England as well.
"Suarez, for me, is up there with Lionel Messi and Cristiano Ronaldo as one of the best players in the world.
"He has been that good and the two of them together have been in great form this season.
"We will have to do everything we can to stop them on Sunday."
