sva-tejasā grasta-samasta-tejāḥ

vidiksu-in all corners; diksu-in all directions (east, west, north and south); urdhvam-above; adhah-below; samantat-on all sides; antah-internally; bahih-externally; bhagavan-the Supreme Personality of Godhead; narasimhah-in the form of Nrsimhadeva (half-lion and half-man); prahapayan-completely destroying; loka-bhayam-fear created by animals, poison, weapons, water, air, fire and so on; svanena-by His roar or the vibration of His name by His devotee Prahlada Maharaja; sva-tejasa-by His personal effulgence; grasta-covered; samasta-all other; tejah-influences.