Gesundheit! (5,3)
I believe the answer is:
bless you
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gesundheit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(German word used after someone sneezes)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for bless you that I've seen before include "often follows sudden explosion!" , "Prayer" , "remark following ejection?" , "Thanks a lot!" , "as bishop may do?" .)