1. 保证赔偿
To indemnify someone against something bad happening means to promise to protect them, especially financially, if it happens.

1. make amends for
pay compensation for

e.g. One can never fully repair the suffering and losses of the Jews in the Third Reich
She was compensated for the loss of her arm in the accident

Synonym: compensaterecompenserepair

2. secure against future loss, damage, or liability
give security for

e.g. This plan indemnifies workers against wages lost through illness