Losing Sunday was a major setback for a team hoping to end a 12-year absence from the playoffs.
"This one was obviously really needed," Fitzpatrick said. "I don't really want to project or talk about the next however many games we have left. It's all about 'Go get back to work and try to win next week.' It's all we can worry about."
Hilton got things started by fielding Shawn Powell's 48-yard punt at his own 25, faking out Smith, breaking another tackle in the middle of the field and sprinting to the end zone for Indy's first punt return for a score in five years.
After the teams traded four field goals, Hilton emerged again, pulling down Luck's third-down pass in the back of the end zone.
All the Bills could muster was Fitzpatrick's late TD pass, and Pagano went home a happy man.
"I couldn't be prouder of the football team, because Chuck was here and the goal was to make him smile when he left," Arians said. "I'm sure he's up there smiling."