George drained four 3-points while adding six rebounds and five assists for Indiana.
Augustin also connected four times from beyond the arc and provided six assists.
The Pacers trailed by seven points entering the final period, but outscored the Grizzlies 28-16 down the stretch to rebound from a Saturday loss to Atlanta.
Zach Randolph posted a double-double of 21 points and 15 rebounds but it wasn't enough for the Grizzlies, who fell for the third time in four contests.
2014: The Year in Music [PHOTOS]