There are many synonyms for the phrase "not be able to resist" that can enhance your writing and provide a variety of options to convey your message. These include irresistible, impossible to resist, unable to refuse, not capable of resisting, powerless against, can't help but succumb to, and incapable of saying no. Other similar words and phrases include compelled, urge, allure, captivating, fascinate, and enchant. By using these synonyms, you can add depth and nuance to your writing, helping to make it more engaging and expressive. Whether you are telling a story or writing an essay, these synonyms can help you better convey your ideas and communicate with your audience.