Resolution in the mode of goodness is described in Bhagavad-gītā (18.33) :

dhṛtyā yayā dhārayate manaḥ-prāṇendriya-kriyāḥ yogenāvyabhicāriṇyā dhṛtiḥ sā pārtha sāttvikī

“O son of Pṛthā, that determination which is unbreakable, which is sustained with steadfastness by yoga practice, and thus controls the mind, life and the acts of the senses, is in the mode of goodness.”

Atheists who are envious of the devotees of the Supreme Lord are called narādhamas, or the lowest of men, and undoubtedly are enroute to hell. By all means at their disposal they disturb the devotional service of the Lord, sometimes by direct attack and sometimes by mockery. The devotees, however, remain tolerant, fixing their determination in the mode of goodness. As described by Śrīla Rūpa Gosvāmī in Śrī Upadeśāmṛta (1):

vāco vegaṁ manasaḥ krodha-vegaṁ jihvā-vegam udaropastha-vegam etān vegān yo viṣaheta dhīraḥ sarvām apīmāṁ pṛthivīṁ sa śiṣyāt

“A sober person who can tolerate the urge to speak, the mind’s demands, the actions of anger and the urges of the tongue, belly and genitals is qualified to make disciples all over the world.”