Cristiano Ronaldo has added to the growing list of plaudits for Barcelona superstar Lionel Messi, but warned it would be a mistake for Real Madrid to concentrate only on the Argentinian playmaker in this weekend's 'El Clasico' between the Spanish giants.

Messi has been in stunning form this season and took his tally for the campaign to 39 goals in all competitions with all four in Tuesday's 4-1 Champions League victory over Arsenal.

He has scored 15 goals in his last ten games, including three hat-tricks, and is likely to be one of the major figures on Saturday.

And his battle with Madrid ace Ronaldo is a mouthwatering prospect with both players in fine form.

Ronaldo said: "He (Messi) is having a phenomenal season. He's in great form and is among the best players in the world now and ever.

"He's phenomenal, but Messi doesn't play on his own. The coach and his team-mates deserve credit as well. Whoever knows about football knows what I'm saying."