BS”D
There are many stories of patients who fought, and sometimes not successfully, a terrible illness by bringing others closer to Hashem.
Chedva Silverfarb AH spent the last two years of her very short life giving shiurim about shmiras halashon in between debilitating chemo and radiation treatments.
Chana bas Aharon Leib AH, with whose family I am very close, responded to her awful diagnosis of an inoperable brain tumor L”A R”L that she received a few weeks before her chassune by giving out copies of a book of positive Torah thoughts. She recovered and married, only to relapse and ultimately succumb to the illness R”L.
These are just the oldest and the most recent examples I could think of in response to the post above about the heroism of those suffering. They jumped in and fought the fires raging in their own bodies the only way they could, by increasing their emunah and bitochon and encouraging others around them to do the same.