By good luck it is that you had been encountered in a hand-to-hand combat with that foremost of Rākşasas, incapable of being slain by the celestials themselves; and achieved victory (ultimately).
दिष्ट्या त्वं राक्षसेन्द्रेण द्वन्द्वयुद्धमुपागतः। देवतानामवध्येन विजय प्राप्तवानसि॥