The words are:
1- In the 18th second: "كل نفس ذائقة الموت" ("kollo nafsin tha'iqatol mawt", literally: 'Every soul shall have the taste of death').
2- Almost immediately after, in the 27th second: "كل من عليها فان" ("kollo man alaiha fan", literally: 'All that is on earth will perish').