oṁ namo bhagavate mantra-tattva-liṅgāya yajña-kratave mahā-dhvarāvayavāya mahā-puruṣāya namaḥ karma-śuklāya tri-yugāya namas te
om - O Lord; namaḥ - respectful obeisances; bhagavate - unto the Supreme Personality of Godhead; mantra-tattva-liṅgāya - who is understood in truth by different mantras; yajña - in the form of animal sacrifices; kratave - and animal sacrifice; mahā-dhvara - great sacrifices; avayavāya - whose limbs and bodily parts; mahā-puruṣāya - unto the Supreme Person; namaḥ - respectful obeisances; karma-śuklāya - who purifies the fruitive activities of the living entities; tri-yugāya - unto the Supreme Personality of Godhead, who is full with six opulences and who appears in three yugas (remaining concealed in the fourth yuga); namaḥ - my respectful obeisances; te - unto You.
Śrī Caitanya Mahāprabhu is the incarnation for this Age of Kali, as confirmed in many places throughout the Purāṇas, the Mahābhārata, Śrīmad-Bhāgavatam and the Upaniṣads. The summary of His appearance is given in Caitanya-caritāmṛta (Madhya 6.99) as follows:
kali-yuge līlāvatāra nā kare bhagavān
ataeva ‘tri-yuga’ kari’ kahi tāra nāma
In this Age of Kali, the Supreme Personality of Godhead (Bhagavān) does not appear as a līlāvatāra, an incarnation to display pastimes. Therefore He is known as tri-yuga. Unlike other incarnations, Lord Śrī Caitanya Mahāprabhu appears in this Age of Kali as a devotee of the Lord. Therefore He is called a concealed incarnation (channāvatāra).