Relief provided by specialist on sun in Spain (6)
I believe the answer is:
solace
'relief' is the definition.
(I know that solace is a type of relief)
'specialist on sun in spain' is the wordplay.
'specialist' becomes 'ace' (I can't justify this - if you can you should believe this answer much more).
'on' means one lot of letters go next to another.
'sun in spain' becomes 'sol' (I've seen this in another clue).
'ace' after 'sol' is 'SOLACE'.
'provided by' acts as a link.
Can you help me to learn more?
(Other definitions for solace that I've seen before include "Comfort at a time of sadness" , "Comfort in time of distress" , "Comfort in misery" , "Kind of comfort - a close thing" , "Something that comforts distress" .)