Go back to refuge (7)
I believe the answer is:
retreat
I believe this is a triple definition!
'go' is the first definition.
(retreating is a kind of going)
'back' is the second definition.
(thesaurus)
'to' acts as a link.
'refuge' is the third definition.
(thesaurus)
(Other definitions for retreat that I've seen before include "Leave - refuge" , "Pull back" , "retirement" , "Take flight" , "care home" .)