Prayer of supplication (6)
I believe the answer is:
litany
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">prayer of supplication</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 litany that I've seen before include "religious text" , "Form of church prayer" , "petitions" , "Repeated prayers" , "Repetitive series" .)