Luckless Lions skipper Robinson made his comeback from a broken foot at Barnet on Tuesday, but lasted just 35 minutes before suffering ankle ligament damage.
He faces another spell on the sidelines and joins fellow defenders Zak Whitbread (hip), Tony Craig (back), Pat O'Connor (cruciate) and Danny Senda (Achilles) in the treatment room.
Striker Price also limped off with a thigh strain which, although not too serious, keeps him out of the clash.
Boss Kenny Jackett's problems in attack are almost as bad as those at the back with Gary Alexander (ankle), Neil Harris (calf), Steve Morison and Lewis Grabban (both thigh) all carrying knocks.
But midfielder Danny Schofield is poised to make his debut following his deadline-day switch from Yeovil.