Both players were subbed in Tuesdays defeat to Leicester after the opening 45 minutes with the scoreline at 1-1.
And Scott revealed he was taking no chances regaring injuries to his key players with two away trips coming up in League Two.
"It was disappointing to lose Marcus and Lewis at half time and after that we struggled to find any fluency," he said to the clubs website.
"They both picked up a couple of knocks and I didn't want to risk them. We have Plymouth and Crewe coming up and we need them available for both those games."