Because such persons are very much affectionate toward Krsna, they cannot be defeated by demons like the associates of Kamsa (or by the internal enemies, the senses) - SB 10.8.18

Expressions researched:
"Because such persons are very much affectionate toward Kṛṣṇa, they cannot be defeated by demons like the associates of Kaṁsa" |"or by the internal enemies, the senses"

Srimad-Bhagavatam

SB Canto 10.1 to 10.13

Demons [asuras] cannot harm the demigods, who always have Lord Viṣṇu on their side. Similarly, any person or group attached to Kṛṣṇa is extremely fortunate. Because such persons are very much affectionate toward Kṛṣṇa, they cannot be defeated by demons like the associates of Kaṁsa [or by the internal enemies, the senses].

SB 10.8.18, Translation

Demons [asuras] cannot harm the demigods, who always have Lord Viṣṇu on their side. Similarly, any person or group attached to Kṛṣṇa is extremely fortunate. Because such persons are very much affectionate toward Kṛṣṇa, they cannot be defeated by demons like the associates of Kaṁsa [or by the internal enemies, the senses].