CC Madhya 18.178

premāveśe prabhu yabe karena citkāra
mlecchera hṛdaye yena lāge śeladhāra
Word for word: 
prema-āveśe — in ecstatic love; prabhu — Śrī Caitanya Mahāprabhu; yabe — when; karena citkāra — loudly shouts; mlecchera hṛdaye — in the hearts of the Muslim soldiers; yena — as if; lāge — strikes; śela-dhāra — a thunderbolt.
Translation: 
When the Lord shouted very loudly in ecstatic love, it appeared to the Muslim soldiers that their hearts were struck by thunderbolts.