TgJ 2K7:4 :אִם יְחַיוֹנַנָא נֵיחֵי וְאִם יִקטְלֻנַנָא וְנִתקְטִיל‏ : if they let us live then we shall live and if they kill us then we shall be killed
See the entire entry for ḥyy vb. to live