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Setback for Lebanon, having lost an illustrious prize (5)

Ross

I believe the answer is:

nobel

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'prize' is the definition.
(thesaurus)

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(Other definitions for nobel that I've seen before include "and 21 Across: Prestigious international award" , "Alfred --, Swedish founder of international prizes" , "he provided prizes" , "Philanthropic Swede noted for establishing international prizes" , "Swedish prize" .)

I've seen this clue in The Guardian.
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