Bills head coach Sean McDermott said that Prater has been ruled out for Sunday's game against the Browns due to a right quadriceps injury, Jay Skurski of The Buffalo News reports.
Johnson turned four carries into 13 yards and caught three passes on as many targets for 15 yards during the Bills' 35-31 win over the Patriots on Sunday.
Cook rushed 22 times for 107 yards and two touchdowns while bringing in two of three targets for four yards and another score in the Bills' 35-31 win over the Patriots on Sunday.
Allen completed 19 of 28 passes for 193 yards with three touchdowns and no interceptions and rushed 11 times for 48 yards in the Bills' 35-31 win over the Patriots on Sunday.
Coach Sean McDermott noted Friday that Palmer (ankle) will be listed as questionable for Sunday's game against the Patriots, Maddy Glab of the Bills' official site reports.