Barcelona defender Thomas Vermaelen has hailed the squad's current team spirit.
Barça came under question earlier this season when they lost to Sevilla and Celta Vigo, but they've responded impressively.
"Clearly the results help, but there's a really good atmosphere in the dressing room," he told Barcelona's official website.
"We always stick together as a team and that will be important for our most difficult times.
"It was important to do well for our fans [against Roma] and six goals give us confidence.
"As for the Clasico, I experienced it as a substitute, but the atmosphere was amazing.
"It will be talked about for many years to come, and I think it'll go down in history."