SB 1.7.21

tataḥ prāduṣkṛtaṁ tejaḥ
 pracaṇḍaṁ sarvato diśam
prāṇāpadam abhiprekṣya
 viṣṇuṁ jiṣṇur uvāca ha
Synonyms: 
tataḥ — thereafter; prāduṣkṛtam — disseminated; tejaḥ — glare; pracaṇḍam — fierce; sarvataḥ — all around; diśam — directions; prāṇa-āpadam — affecting life; abhiprekṣya — having observed it; viṣṇum — unto the Lord; jiṣṇuḥ — Arjuna; uvāca — said; ha — in the past.
Translation: 
Thereupon a glaring light spread in all directions. It was so fierce that Arjuna thought his own life in danger, and so he began to address Lord Śrī Kṛṣṇa.