The trio were missing from the 35-man squad named on Tuesday.
George and centre Lawrence both picked up hamstring injuries in the 33-19 triumph against the All Blacks, while wing Roebuck suffered a foot injury.
Steve Borthwick's depleted England will be bidding for an 11th straight win when they take on Argentina.
The Pumas are targeting a third victory of their autumn tour after crushing Wales earlier this month and then edging a dramatic game against Scotland on Sunday 33-24.
England were already without lock Ollie Chessum and wing Tommy Freeman due to injuries.