692
Śrīmad-Bhāgavatam
[Canto 3, Ch. 17]
mano-vīrya-varotsiktam asṛṇyam akuto-bhayam bhītā nililyire devās tārkṣya-trastā ivāhayaḥ
manas-vīrya—by mental and bodily strength; vara—by the boon; utsiktam—proud; asṛṇyam—not able to be checked; akutaḥ-bhayam—fearing no one; bhītāḥ—frightened; nililyire—hid themselves; devāḥ—the demigods; tārkṣya—Garuḍa; trastāḥ—frightened of; iva—like; ahayaḥ—snakes.
TRANSLATION
His mental and bodily strength as well as the boon conferred upon him had made him proud. He feared death at the hands of no one, and there was no checking him. The gods, therefore, were seized with fear at his very sight, and they hid themselves even as snakes hide themselves for fear of Garuḍa.
PURPORT
The  asuras  are generally strongly built, as described here, and therefore their mental condition is very sound, and their prowess is also extra-ordinary. Hiraṇyākṣa and Hiraṇyakaśipu, having received the boon that they would not be killed by any other living entity within this universe, were almost immortal, and thus they were completely fearless.
TEXT 23
स वै तिरोहितान् दृष्ट्वा महसा स्वेन दैत्यराट् । सेन्द्रान्देवगणान् क्षीबानपश्यन् व्यनदद् भृशम्।२३।
sa vai tiro-hitān dṛṣṭvā mahasā svena daitya-rāṭ sendrān deva-gaṇān kṣībān apaśyan vyanadad bhṛśam
saḥ—he; vai—indeed; tiraḥ-hitān—vanished; dṛṣṭvā—having seen; mahasā—by might; svena—his own; daitya-rāṭ—the chief of the daityas (demons); sa-indrān—along with Indra; deva-gaṇān—the demigods; kṣībān—intoxicated; apaśyan—not finding; vyanadat—roared; bhṛśam—loudly.