Hi, Unless this roof is over 30 years old it is probably just fiber cement not asbestos cement at all. Even if it is the old asbestos containing cement it will only be 13% asbestos in the cement. You can just remove it carefully , use a face mask, gloves and overalls. Get some 'Asbestos Waste' red bags from your local council refuse disposal deportment or off eBay. Then put the waste sheets in the bags and take them to your council run disposal site. They will take small amounts of cement roofing sheets .
I worked for the company that makes this roofing sheet for 18 years and was quality control chemist for the last 8 years of that time.
Avoid cutting or drilling the sheets as you remove them,use a face mask, gloves , goggles and disposable overalls with a hood.
If I could see the roofing sheets I could tell you just by the look and colour of them if they were asbestos cement or the now more common fiber cement made with rayon fiber in place of asbestos.