heaven forbid
https://gyazo.com/f916bdf23732ffaf957c440502fe7060
Heaven forbid (also God forbid)
used to express a fervent wish that something should not happen:
｟話｠ (…ということは)断じてない, あってたまるか; (…ということが)ありませんように
e.g. if, God forbid, a close family member of yours were killed
e.g. with clause : God forbid that this should happen to anyone ever again.
#collocation