стоять одной ногой в могиле

From LSJ

κακῶν ἀπέστω θάνατος, ὡς ἴδῃ κακά → of all evils let only death be absent, so he may see evils

Source

Russian > Greek

τὸν ἕτερον πόδα ἐν τῇ σορῷ ἔχειν