If the fire is coming from the battery charging circuit, and perhaps the bat is boiling, then turning the master off will remove the bat from the circuit.
Losing the governor is no problem to anybody trained properly.
Losing RRPM warning is no problem to anybody who has been trained properly and has developed an ear for the RPM.
Make your emergency radio call before turning things off
Leave Xpdr in emergency setting
Don't need nav equipment because you are landing RFN wherever that might happen to be.
Landing lights - won't need them, the glow from the fire, and the fact that you are 5h1tting blue lights should give plenty of illumination!