Complex sentence: In the main hall nearby are the three images of Buddha (Amida, Shaka, and Miroku) that are the main object of worship, and which guard respectively the past, the present and the future.
Split into simpler sentences: In the main hall nearby are the three images of Buddha (Amida, Shaka, and Miroku) that are the main object of worship. They guard respectively the past, the present and the future.