"I've played on some tough teams," Robinson said. "But this one, there's something a little different, something special about this group."
A seven-point deficit midway through the fourth wasn't enough to doom the Bulls, who finished the game on a 10-0 run in the final 1:59. And to think, the Bulls weren't anywhere near full strength. Kirk Hinrich was out again with a calf injury.
Luol Deng isn't even expected to rejoin the team until Tuesday, after dealing with an illness apparently so severe that a spinal tap and other tests since were needed to rule out things like meningitis.
"So proud of my team man, this bed might be good luck after all," Deng wrote on Twitter after the game, with a photo of him in a hospital bed.
Oh, and Derrick Rose remains sidelined, as he's been since April 2012.
No problem. The Heat are 41-3 in their last 44 games with two of those losses to the Bulls, who are now 3-2 against Miami this season.
"I think when you're facing adversity, you have to be mentally tough," Bulls coach Tom Thibodeau said. "But this is just one game. We have to play a lot better in our next one."
LeBron James got his MVP trophy from Commissioner David Stern before the game, then struggled to a two-point first half before finishing with 24 points, eight rebounds and seven assists for Miami. Dwyane Wade added 14 for the Heat, who had no one else in double figures, finished shooting 40 percent from the floor and were outrebounded 46-32.
"I'm not stunned," James said. "This is what the playoffs is all about. We're going against a really good team."
Miami was outscored 35-24 in the fourth, something that drew the ire of Heat coach Erik Spoelstra afterward.
"There's no excuses," said Spoelstra, whose team had not played in more than a week. "We're not making any excuses for time off or anything else."
If anyone could have made excuses, it was Robinson. He needed 10 stitches, five in his lip and five more inside his mouth, to close a nasty cut that came when he dove for a loose ball with James and struck his head on the court late in the first half.
And then not only did he play the whole second half, he scored 24 points in those 24 minutes, including the last seven points that finished the job for Chicago.
"He was born a scorer," Miami guard Mario Chalmers said.
Joakim Noah scored 13 points and grabbed 11 rebounds for the Bulls, who got 12 from Taj Gibson and 10 from Marco Belinelli. Game 2 is Wednesday night in Miami.
"We're not really a flashy team," Gibson said. "We like to go out and do our job."
Storylines Bulls 93, Heat 86
R Chicago's Nate Robinson scores 27 points as the Bulls win the series opener.
• The Bulls snap the Heat's 12-game winning streak.