Halliday's systemic functional theory is a social look at a language which is interwoven with three metafunctional processes. Studying literary texts from linguistic aspects, such as ideational function is one of the new research approaches which improve a better and deeper understanding of hidden layers of texts. One of the modern Arabic and Persian literary discussions is the use of myths in modern poetry. Contemporary Arabic and Persian poets have described Hallaj's story in the form of myth. Abd al-Wahhab al-Bayati, a contemporary Arabic poet, and Shafiei Kadkani, a contemporary Persian poet, are among the poets who deal with the story of Hallaj in some of their poems. The method is correlative-analytical and this study tries to analyze the variety of different ideational metafunction processes of Hallaj's story in the poetry of these two poets. The results show that each of these two poets used various material processes to express their opinions. Peripheral elements such as time and space exist in the poems of both poets.