Cristiano Ronaldo scored to spark Real Madrid's 3-1 comeback win over Barcelona in a thrilling 'clasico' match Saturday in the Spanish league handed the visitors their first loss of the season.The result spoiled a strong Barcelona debut by Luis Suarez, who played well in his first game since a four-month biting ban and set up Neymar to fire in a long strike for a fourth-minute lead at the Santiago Bernabeu Stadium.But Ronaldo leveled from the penalty spot in the 35th to end Barcelona's record of eight clean sheets to start the season.Pepe added a header to take the lead in the 50th, and Karim Benzema sealed the win in the 61st after having hit the woodwork twice.