お前にとってはどうでもいいこと。

you (formerly honorific, now sometimes derog. term referring to an equal or inferior); presence (of a god, nobleman, etc.)

to; for; concerning; as far as ... is concerned; regarding

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

how; in what way; how about

but; however; though; nevertheless; still; yet; even so; even; however; no matter how; even if; even though; ... or something; either ... or ...; neither ... nor ...; pseudo-; quack; in-name-only; for lack of anything better to do

good; excellent; fine; nice; pleasant; agreeable; sufficient (can be used to turn down an offer); ready; prepared; profitable (e.g. deal, business offer, etc.); beneficial; OK

thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as