Malagasy SanatriaLinking work introducing a hypothesis you strongly hope will never happen.

Malagasy would be like : "*You should quarantine yourself*, **sanatria** *you catch coronavirus*" English would actually be : "**In case** you catch coronavirus **- God forbid ! -** you should quarantine yourself" You may even say it twice if you really want to insist Malagasy : "*I may have to kill that man,* **raha sanatria dia sanatria** *he tries to hurt my kids.*" English : "**I seriously hope this will never ever happen, but if it happens,** I may have to kill that man if he tries to hurt my kids." Any other language expressing the same meaning with one single word ?