Chant Hare Krishna to be Saved from the Evils of Kali Yuga

The maha-mantra appears in the Kali-santarana Upanisad of the Krsna Yajur Veda wherein Lord Brahma is answering a question by Narada Muni:

(1)
harih om
dvaparante narado brahmanam jagam katham
bhagavan gam paryatan-kalim santare-yamiti

sa hovaca brahma –
sadhu prsto’smi sarva sruti-rahasyam gopayam
tacchrnu yena kali-samsaram tarisyasi bhagavata
adi-purusasya narayanasya namoccarana-matrena nirdhuta-kalir bhavati

At the end of Dvapara-Yuga, Narada, who had traversed the whole world, went to Brahma and addressed him thus, ‘O Lord, how shall I be able to ward off the effects of Kali?’ Brahma thus replied, ‘You have asked an excellent question. Listen to that secret which all the Vedas keep hidden, through which one may cross over material existence during the age of Kali. One becomes free from the influence of Kali by merely uttering the Names of Lord Narayana, who is the original Supreme Person.

(2)
naradah punah papraccha tananam kimiti
sa hovaca hiranyagarbah –

hare krsna hare krsna krsna krsna hare
hare rama hare rama rama rama hare hare

iti sodasakam namnam
kali-kalmasa-nasanam
natah parataropayah
sarva-vedesu drsyate

Thus again Narada asked Brahma, ‘What are those Names?’

Lord Brahma replied, ‘Hare Krsna Hare Krsna Krsna Krsna Hare Hare, Hare Rama Hare Rama Rama Rama Hare Hare. These sixteen Holy Names will destroy the sinful influences of the age of Kali. I do not see any other method'.