Relief organisation hot with religion? (3,5)
I believe the answer is:
red cross
'relief organisation' is the definition.
(I've seen this before)
'hot with religion?' is the wordplay.
I cannot really see how this works, but
'religion?' could be 're' (short for Religious Education) and 're' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for red cross that I've seen before include "Emergency organisation" , "Medical outfit" , "Humanitarian outfit" , "International relief organisation" , "Intl. relief agency" .)