One verse

Srimad Bhagavatam 8.11.32

8.11.32

न तस्य हि त्वचमपि वज्र ऊर्जितो बिभेद य: सुरपतिनौजसेरित: । तदद्भ‍ुतं परमतिवीर्यवृत्रभित् तिरस्कृतो नमुचिशिरोधरत्वचा ॥ ३२ ॥

na tasya hi tvacam api vajra urjito bibheda yah sura-patinaujaseritah tad adbhutam param ativirya-vrtra-bhit tiraskrto namuci-sirodhara-tvaca

na
not
tasya
of him (Namuci)
hi
indeed
tvacam api
even the skin
vajrah
the thunderbolt
urjitah
very powerful
bibheda
could pierce
yah
the weapon which
sura-patina
by the king of the demigods
ojasa
very forcefully
iritah
had been released
tat
therefore
adbhutam param
it was extraordinarily wonderful
ativirya-vrtra-bhit
so powerful that it could pierce the body of the very powerful Vrtrasura
tiraskrtah
(now in the future) which had been repelled
namuci-sirodhara-tvaca
by the skin of Namuci’s neck

Although King Indra hurled his thunderbolt at Namuci with great force, it could not even pierce his skin. It is very wonderful that the famed thunderbolt that had pierced the body of Vrtrasura could not even slightly injure the skin of Namuci’s neck.