Valmiki Ramayana Yuddha Kanda Sarga 93 Shloka 30
Original Shlokaकवचंब्रह्मदत्तंमेयदादित्यसमप्रभम् ।।6.93.30।। देवासुरविमर्धेषु न भिन्नंवज्रमुष्टिभिः ।
1 source checked for this shloka
मे I, ब्रह्मदत्तम् given by Brahma, आदित्यसमप्रभम् effulgent like sun, यत् that which, कवचम् shield, देवासुरविमर्धेषु Deva and Asura conflicts, वज्रमुष्टिभिः thunder bolts in their fists, न भिन्नम् not break
'I was given a shield by Brahma, effulgent like the Sun which the Devas or Danavas could not break with their thunderbolt fists'.