Valmiki Ramayana Kishkindha Kanda Sarga 11 Shloka 80
Original Shlokaन खल्वहं त्वां तुलये नावमन्ये न भीषये। कर्मभिस्तस्य भीमैस्तु कातर्यं जनितं मम4.11.80।।
1 source checked for this shloka
अहम् I am, त्वाम् your, न खलु तुलये indeed do not compare, नावमन्ये I do not insult you, न भीषये not to scare , तस्य his, भीमैः by dreadful, कर्मभिः by his actions, मम in me, कातर्यम् cowardice, जनितम् is created.
'The dreadful acts of Vali have made me feel timid. This is not to compare you with him or your strength with his or insult you and scare you.