Originally Posted by
Magplug
...Away from the ground the only way to stop the spinning from the anti-torque reaction is to chop both engines by simultaneously retarding both power levers and dump the collective to enter autorotation.
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Other way around. Collective full down first, then sort out your recovery attitude and think about your plan. There is no hurry to get the engines off if you've backed off most of the power with collective and you have height to play with. If you have airspeed the tail fin will give sufficient anti-torque against the engines at low power, just accept out of trim flight. Engines off (not idle) before flare for auto-rotation landing. It is far more important to get the collective down and re-establish a stable attitude after TR drive failure than rushing to get the engines off immediately.