Prayers for my Dad please

Dad had a carcinoma removed from his bladder last monday. Even though he has been taking it easy, he must have exerted himself a little too much and he is losing blood. He will have further surgery in the coming weeks. The statistics are very hopeful but still I am worried. He's 75 and to put it bluntly he says he wants 10 more years to work on all his projects. My Dad is 5'4" but all he's accomplished in his lifetime, he is a giant. I would not put something so personal out on the internet except that I believe in prayer. Thank you.