The image below is a screen shot displaying Reliance of the Traveller, Book O, Ch.8.7, as it appeared in my browser, which was pointed to the search result from http://www.muhaddith.org/cgi-bin/e_optns.exe. Muhaddith is an Islamic web site which maintains a large library consisting mostly of Arabic texts. Reliance of the Traveller is one of the few English translations available there. Maktabh.org has a Scribid version of Reliance that will be easier to search and read than the text version which serves as my source.
These screen shots display a list of attitudes and actions which entail apostasy, subjecting the Muslim guilty of them to the death penalty. Several of these items stand out above the rest.
4. to revile Allah or his messenger
5. to deny the existence and qualities of Allah
6. to be sarcastic about Allah, his command, interdiction, promise or threat
7. to deny any verse of the Koran
16 to revile the religion of Islam
19. to be sarcastic about any ruling of the sacred law
20 to deny that Allah intended the Prophet's message to be the religion followed by the entire world.
It is obvious that the above listed acts are included in the proscription in item 5 of O11.10. which subjects a dhimmi to the death penalty.