vṛndāvana-patha - the path to Vṛndāvana; prabhu - the Lord; puchena - inquires; tomāre - from you; gaṅgā-tīra-patha - the path on the bank of the Ganges; tabe - at that time; dekhāiha - please show; tāṅre - Him.

“If Śrī Caitanya Mahāprabhu asks you about the path to Vṛndāvana, please show Him the path on the bank of the Ganges instead.”