Valmiki Ramayana Yuddha Kanda Sarga 25 Shloka 32

रामस्य Rama's, तत् that, रूपम् form, यादृशम् to see, प्रहरणानिचएकः weapons, he alone, लङ्कांपुरीम् Lanka city, वधिष्यति will slay, तेत्रयः those three, तिष्ठन्तु even keep away.

"If we see Rama's form and his weapon it is enough. He can alone slay even when all the other three keep away."