With 11 games left, the champions stay seven points clear of second-placed Juventus, who beat city rivals Torino 1-0 thanks to Giorgio Chiellini's 81st minute header from a Pavel Nedved free kick.
Torino goalkeeper Matteo Sereni had tried his best to extend his side's seven-game unbeaten run when he made a full length save on the line to stop Vincenzo Iaquinta's first-half header.
Juve coach Claudio Ranieri left Alessandro Del Piero and some other first teamers on the bench with one eye on Tuesday's Champions League second leg match with Chelsea.
"We have been able to control them well and it was a fair result," Cambiasso told Sky television. "We hope some of our team mates recover."
Ibrahimovic, rested for Wednesday's 3-0 Italian Cup semi-final first-leg defeat by Sampdoria on the same ground, opened the scoring after two minutes when he raced onto Dejan Stankovic's pass and lifted the ball over keeper Rubinho.
Balotelli, accused of diving to win a penalty in last weekend's 3-3 draw with AS Roma, was at the centre of more controversy after 61 minutes when his weak shot was adjudged to have crossed the line despite Marco Rossi's attempts to clear.
