RV 6.18.12
प्र तुविद्युम्नस्य स्थविरस्य घृष्वेर् दिवो ररप्शे महिमा पृथिव्याः । नास्य शत्रुर् न प्रतिमानम् अस्ति न प्रतिष्ठिः पुरुमायस्य सह्योः ॥
pra tuvidyumnasya sthavirasya ghṛṣver divo rarapśe mahimā pṛthivyāḥ | nāsya śatrur na pratimānam asti na pratiṣṭhiḥ purumāyasya sahyoḥ ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
From heaven, from earth is bruited forth the greatness of him the firm, the fiery, the resplendent. No foe hath he, no counterpart, no refuge is there from him the Conqueror full of wisdom
Translated by Ralph T. H. Griffith (1896)