What is the best dua to make to protect you against the consequences of something you’ve done?

I’ve made a really bad mistake recently and I’m terrified of the consequences of what’s going to happen to me. I’ve become severely depressed and the only thing that’s keeping me going is my belief in Allah and Islam. Please can you tell me a dua that’ll help me through this, one that’ll protect me from the consequences of this awful mistake I made that has ruined my life ,one that’ll help restore my peace of mind and one that’ll ensure everything is ok. I am genuine in my repentance for all the wrongdoings I’ve committed. Please help me I don’t think I’m going to recover from this. ashadu an la ilaha illa'llah wa ashadu anna muhammadan abduhu wa rasululu lā ʾilāha ʾillā-llāh, muḥammadur-rasūlu-llāh