2 sentences

1. 这种行为无异于惹火自焚。

   zhè zhǒng xíng​wéi wú​yì​yú rě​huǒ zì​fén.

   Such behavior is tantamount to playing with fire and getting burned.

   Source: Dong Chinese Dictionary

2. 抗议者在大街上引火自焚。

   kàng​yì zhě zài dà​jiē shàng yǐn​huǒ zì​fén.

   Protesters set themselves on fire in the street.

   Source: Dong Chinese Dictionary