Gives power to Lebanese, endlessly in revolution (7)
I believe the answer is:
enables
'gives power to' is the definition.
(I've seen this in another clue)
'lebanese endlessly in revolution' is the wordplay.
'endlessly' means to remove the last letter.
'in revolution' indicates anagramming the letters.
'lebanese' with its last letter removed is 'lebanes'.
'lebanes' with letters rearranged gives 'ENABLES'.
(Other definitions for enables that I've seen before include "Facilitates or empowers" , "Allows" , "Makes possible" , "Renders capable" .)