ἀλεξίκακε τρισέληνε, μηδέποθ' ἡττηθείς, σήμερον ἐξετάθης → averter of woes, offspring of three nights, thou, who never didst suffer defeat, art to-day laid low
see φημί.
φῆσθα: эп. (= ἔφησθα) 2 л. sing. impf. в знач. aor. к φημί.