Pronunciation: [d͡ʒˈiː ˈe͡ɪt] (IPA)
Correct spelling for the English word "G8" is [d͡ʒˈiː ˈe͡ɪt], [dʒˈiː ˈeɪt], [dʒ_ˈiː_ ˈeɪ_t] (IPA phonetic alphabet).