I am concerned about the discussion here.
When dealing with emegencies their should be top level steps to perform (peeling an onion) followed by lower level, time and conditions permitting.
The top level steps should be from wrote (simulator training, etc.) Fly-the-aircraft-first, the lower level steps may be checklists types to ensure that you haven't missed anything assuming that you have your aircraft under control.
For engine fire on the ground (below decision speed) , I assume that the first thing you do is to stop, immediately followed/or in conjunction with turning off the fuel to the affected engine.
Individual companies may offer additional procedures, but if you really do have an external (outside the engine) fire, the crew is unlikely to know this sufficient for confirmation and decision making, before they stop by that time I suspect the cabin crew have made their decisions.