The sides clash in the first leg of their Champions League semi-final with Barca looking to claim European glory after falling 10 points behind Real Madrid in La Liga´s title race.
Argentina forward Messi will be vital to the Catalan side´s chances of success, but he said: "More than a duel between me and Ronaldo, this is a game between two big teams and will be a very interesting match."
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: http://gms.to/writeforgms