There is no mandatory requirement for insurance when entering Egypt, and everything that is written on travel sites about its obligation is actually just a recommendation or an attempt to sell you insurance. If you are traveling in Egypt on your own, then insurance really won't hurt, because you won't get free medical care here, but we repeat once again – this is not necessary and no one asks for it at the entrance. Moreover, you can apply for insurance while already in Egypt, if you decide that you need it. You can insure online on these sites:
 Найти и сравнить цены на туристическую страховку на Sravni.ru
 Найти и сравнить цены на туристическую страховку на Cherehapa.ru
 Найти и сравнить цены на туристическую страховку на Tripinsurance.ru