When it comes to finding synonyms for the phrase "most rescuing," there are a few different options to choose from. One potential choice might be "life-saving," as this phrase conveys the idea that something has helped to save someone's life or prevent a dangerous situation from escalating. Another option might be "heroic," which implies that the actions taken were brave and courageous. "Protective" is another possibility, suggesting that someone or something has worked hard to keep another person safe from harm. Finally, "beneficial" might be a good choice for situations where something has provided a significant and positive impact on someone's life or well-being.