、。
Asahara thinks of himself as a messiah.
Literal
Asahara [topic-は], self [object-を] messiah [copula-だと] thinking.
麻原 refers to Shoko Asahara (麻原彰晃), the founder of the Aum Shinrikyo cult responsible for the 1995 Tokyo subway sarin gas attack. 救世主 (きゅうせいしゅ, 'messiah/savior') is a Sino-Japanese compound. 思ってる is casual ~ている — he currently holds this belief.