Guardian spirits (5)
I believe the answer is:
genii
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">guardian spirits</span>' is the definition.<br/ ><span class="explanation-format__explanation">(plural of 'genie')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for genii that I've seen before include "Perhaps boy wonders" , "bottled spirits" , "Demons with magical powers" , "Guiding spirits" , "Spirits such as Aladdin's" .)