Indonesian business protected by foundation (8)
I believe the answer is:
balinese
'indonesian' is the definition.
(Balinese is an example)
'business protected by foundation' is the wordplay.
'business' becomes 'line' (as in someone's line of work).
'protected by' indicates putting letters inside (inserted letters are held or protected).
'foundation' becomes 'base' (synonyms).
'line' inserted into 'base' is 'BALINESE'.
(Other definitions for balinese that I've seen before include "Indonesian" , "policy needs external support" , "Islanders" , "Foreign language" , "Asian language" .)