Asian god's atrocious nadir (5)
I believe the answer is:
indra
'asian god's' is the definition.
'Indra' can be an answer for 'god's' (Indra is an example). I'm unsure of the 'asian' bit.
'atrocious nadir' is the wordplay.
'atrocious' is an anagram indicator.
'nadir' is an anagram of 'INDRA'.
Can you help me to learn more?
(Other definitions for indra that I've seen before include "Hindu sky god" , "Deity" , "Hindu king of the gods" , "Hindu god of rain and thunder - drain (anag)" , "Hindu god of the weather" .)