The two strikers, who both arrived at the club over the summer, have scored three goals between them in the Cottagers' opening five games of the season.
"Berbatov is a fantastic striker, he's been one of the best for many years now," Rodallega told the club's official website.
"It's a pleasure to play alongside him, and I think we work well together. He doesn't just score goals, but he creates them too."
Fulham welcome Premier League champions Manchester City to Craven Cottage on Saturday.