Is a person who died from prostate cancer that spread throughout his body, and who suffered severe pain and fell into a coma before his death, considered a "martyr of the internal illness," and is he protected from the torment of the grave?

We ask Allah to have mercy on your father, grant him the stations of martyrs, and intercede for him through his illness. A cancer patient is considered a martyr. Sheikh Muhammad Al-Shinqiti was asked about cancer and abdominal diseases, and he mentioned that diseases that afflict a person, such as cancer or ulcers, are considered among the martyrdom of the abdomen, even if one accidentally swallows something and dies from it. So, if cancer affects the abdomen and one dies from it, he is a martyr who died of an abdominal illness.