The Gers suffered their second loss in the Scottish Championship on Saturday afternoon, as they went down 2-1 at Falkirk Stadium.
John Baird put the home side head after just three minutes when he found the target from the penalty spot.
Barrie McKay equalised for Rangers with a low drive on 15 minutes, before Will Vaulks put Falkirk back in front 10 minutes into the second half.
Miller has revealed that the Rangers players were disappointed with the final result, but he has made it clear that the team are ready to bounce back.
“There are some disappointed lads in there; we gave up two easy goals but the quality we have in that dressing room we should be able to deal with that and create more chances to get back into the game,” the 35-year-old told Rangers’ official website.
“Wes made some cracking saves to keep it at 2-1 and give us that opportunity but it clearly wasn’t our day,” added Miller. “We can’t control that now, our game has gone and we are now firmly focussed on next week. It’s at home, a must win and let’s hope it’s three points in the bag.
“Yes we’re disappointed but we have to move on and these things happen in football and everything is now looking forward to that huge game on the 28th.”
Over the course of the 90 minutes at Falkirk Stadium, hosts Falkirk had just 32% of the possession, took five shots of which four were on target, and earned three corners.
Visitors Rangers had 68% of the possession, took 17 shots of which seven were on target, and earned 15 corners.
Mark Warburton’s side will return to action on December 28 when they take on title challengers Hibernian at Ibrox in Glasgow.
The Gers are at the top of the league table at the moment with 41 points from 17 matches. Rangers are level on points with Hibernian, who are currently second in the standings due to an inferior goal difference.