Valmiki Ramayana Yuddha Kanda Sarga 104 Shloka 24
Original Shlokaनिर्ददाह स तान्बाणान्रामकार्मुकनिःसृतान् । रावणस्यमहान् शूलःपतङ्गानिवपावकः ।।6.104.24।।
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रावणस्य Ravana's, सः that, महान् great, शूलः trident, रामकार्मुकनिःसृतान् arrows released from Rama's bow, तान् बाणान् those arrows, पावकः fire, पतङ्कानिव like moths, निर्ददाह burnt
The arrows released from Rama's bow fell on the great trident of Ravana and burnt like moths falling in fire.