Papal representative (6)
(Other definitions for nuncio that I've seen before include "Vatican delegate" , "Sent by the Pope" , "Papal diplomat" , "Papal emissary" , "Papal messenger" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">papal representative</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for legate that I've seen before include "One being tested" , "Papal envoy from Galtee" , "Vatican emissary" , "papal emissary" , "Envoy, maybe papal" .)