Valmiki Ramayana Ayodhya Kanda Sarga 109 Shloka 34

चोरः thief, यथा हि as he is, सः that, बुद्धः Buddha, a wise man, तथा हि is like that, तथागतम् Tathagata, having arrived, अत्र here, नास्तिकम् as an atheist, विद्धि know, तस्मात् hence, यः that one, प्रजानाम् for people, शङ्क्यतमः to be highly distrusted, बुधः learned man, नास्तिकेन with atheist, अभिमुखः come in contact, न स्यात् should not .

Just as a thief, so is the Buddha (a wise men). Know that the Tathagatas are atheists. They are men most distrusted among the people. A learned man should avoid atheists. (Note: Verses 31 to 39 appear to be interpolations, It is anachronistic to talk about Buddha in Tretayuga.)