Indestructible female with anger and power getting on top (9)
I believe the answer is:
fireproof
'indestructible' is the definition.
(something fireproof cannot be destroyed by fire)
'female with anger and power getting on top' is the wordplay.
I cannot really understand how this works, but
'female' could be 'f' (common abbreviation) and 'f' is found in the answer.
'anger' could be 'ire' (ire is intense rage) and 'ire' is present in the answer.
'power' could be 'p' (symbol in physics) and 'p' is found in the answer.
'top' could be 'roof' (I've seen this before) and 'roof' is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for fireproof that I've seen before include "Able to withstand great heat" , "unlikely to go up" , "Able to take the heat" , "Unlikely to flare up" , "Secure from burning" .)