Do the insults and curses against the Divine Self that come to me constitute disbelief for which God will hold me accountable, and what should I do to get rid of them?

Whispers (waswas) and intrusive thoughts do not cause harm if their owner resists them and they do not settle in his heart. They must be pushed away and not allowed to become a belief or result in a statement or action. It is recommended to frequently seek refuge in Allah (isti'adha), engage in remembrance (dhikr), recite the Quran, especially Surah Al-Baqarah, frequent the mosque, associate with the righteous, and act with deliberation. Furthermore, inviting to Allah, enjoining good, and forbidding evil should be done with wisdom, gentleness, kindness, and good admonition.