Battier made his first seven 3-point attempts and finished 8-of-9 from behind the arc. Ariza was 3-of-5 as Houston finished 13-of-23 from 3-point range.
Former Raptor Pops Mensah-Bonsu scored 17 points, including several dunks, for the Rockets (3-2), while Carl Landry added 14 points and Kyle Lowry had 12 points and seven assists.
Andrea Bargnani scored 16 points and Chris Bosh had 13 for the Raptors (2-4), who lost their second game in as many days. Boston beat Toronto 106-90 on Wednesday in Hartford, Conn.