Fellow midfielder Thiago Motta struck twice to help Inter maintain their leadership.
“I think we were able to keep the concentration up today for the whole 90 minutes,” Cambiasso declared to SkySport.
“We did everything ourselves today with a good level of performance.
“Inter are still top of the league with a one point advantage. It won’t be easy but all we have to think about is ourselves right now.
“Maybe it’s right that Roma have a small advantage by not having the distractions of Europe. However, when playing at this level it’s the adrenaline more than anything that keeps you going.”