I have a non-Jewish worker in my office who I have gotten to know very well over the years. Recently when I asked how he was doing he told me that his parents were very sick. When I told him that I would pray for them, he thanked me profusely.
We say that giving charity saves one from death. However, is there anything that he can do that will arouse/ merit רחמי שמים, so that his parents will have a speedy recovery?