Gudjohnsen said: “To score is good for my confidence. That’s what forwards do and I’m happy to deliver.
“But the most important thing is that we’re Liga leaders and must continue like this.”
Barca coach Frank Rijkaard added: “I’m happy for him. He kept his cool at the right time and his finishes were superb.
“I took him off because he had already scored twice and had used a lot of energy.”