The injury-riddled Spurs, playing their second road game in as many nights, trailed by only 3 points entering the final period.
It disappeared in an instant, as the Spurs went on a 9-0 burst in the next 68 seconds and never trailed again.
At halftime, when the Spurs were trailing, 41-38, Robinson spoke to the team.
He checked in with 3 minutes 44 seconds left in the third period, when the Spurs trailed by 15 points.
In that game, the Spurs trailed at one point 72-63 before going on a 19-0 run to put the game away and take the series.
The Spurs seized control early and never trailed, building a 26-13 lead after one period.
The Spurs trailed by 27-26 at the end of the first period when Portland got 11 second-chance points.
The Spurs trailed by 18 (52-34) in the third; more often than not, a lead that big that late holds up in a playoff game.
When Parker left the game for good with 5 minutes 23 seconds remaining in the third quarter, the Spurs trailed by 10.
The Spurs trailed for most of the game before moving ahead for good midway through the final period.