Curse spread about trip abroad in religious writing (9)
I believe the answer is:
scripture
'religious writing' is the definition.
(I know that Scripture is a type of religious writing)
'curse spread about trip abroad' is the wordplay.
'spread' indicates anagramming the letters.
'about' is an insertion indicator.
'abroad' is an anagram indicator.
'curse' anagrammed gives 'scure'.
'trip' with letters rearranged gives 'ript'.
'scure' going around 'ript' is 'SCRIPTURE'.
'in' is the link.
(Other definitions for scripture that I've seen before include "Sacred writings as in Old and New Testament" , "Sacred writings as of Christians" , "religious works" , "Holy Writ" , "Sacred writings of a religion" .)