Valmiki Ramayana Yuddha Kanda Sarga 14 Shloka 16
Original Shlokaदेवान्तकोवापिनरान्तकोवातथातिकायोऽतिरथोमहात्मा । आकम्पनश्चाद्रिसमानसारःस्थातुंनशक्तायुधिराघवस्य ।।6.14.16।।
1 source checked for this shloka
देवान्तकोवापि: either Devanthaka, नरान्तकोवा: or Naranthaka, तथाअतिरधः in the same way Athiratha, महात्मा: great soul, अतिकायः Athikaya, अद्रिसमानसारः even if he is of mountain in size, अकम्पनश्च: like Akampana, राघवस्य: with Raghava, युधि: war, स्थातुम् to stand, नशक्ताः not possible.
"Either by Devanthaka or Naranthaka, in the same way the great soul Athiratha or Akampana, who is of mountainlike size, will not be able to stand against Raghava in war."