This phrase is not exactly a slang, but rather a well-known proverb in Spanish. It translates to 'Good is the enemy of evil'. It means that good actions or intentions always oppose and aim to eliminate evil ones.
Examples
- Spanish: No te preocupes por las malas acciones de esa persona, recuerda que el bien es enemigo del mal.
- English: Don't worry about that person's bad actions, remember that good is the enemy of evil.