Hill finished with 12 points while David West added a game-high 26 with 12 rebounds for the Pacers, who grabbed a commanding 3-1 lead in their best-of-seven Eastern Conference quarterfinal series with Orlando.
The Pacers had to go to extra time to log the victory after blowing a 19-point fourth-quarter lead.
Jason Richardson netted 25 points and Glen Davis added 24 with 11 rebounds for the Magic.
Millions of Getty images now available for free via embed tool
Boston schools pull out free condoms over wrapping complaints