Vous avez cherché: it is up to you (Anglais - Italien)

it is up to you.
spetta a voi.

it is up to you!
la scelta è vostra!

it is up to you now.
ora dipende da voi.

it is up to [...]
spetta a [...]

that said, it is up to you...
detto questo a voi la scelta finale...

it is up to them.
sta a loro decidere.

the rest is up to you
a questo punto della vita mia

victory is up to you.
la vittoria è nelle tue mani.

the rest is up to you. ;)
the rest is up to you. ;)

any reflection is up to you.
a lei le riflessioni sul loro contenuto.

that choice is up to you!
la scelta spetta a te!

it is up to you on how to make it big.
spetta a voi su come fare le cose in grande.

how you do that is up to you.
sta a voi decidere come esprimervi.

was it true? it is up to you to judge.
era questa verità? a voi di giudicare.

it is up to you now, to take up new challenges !
sta a voi ora a confrontarvi con nuove sfide!

it is up to you to deliver this legislation quickly.
spetta a voi approvarla rapidamente.

in conclusion, it is up to you to provide leadership.
in conclusione, spetta a voi svolgere un ruolo guida.

it is up to you to redress the balance, commissioner!
signor commissario, ci pensi lei a ristabilire l' equilibrio!

it is up to you to offer them safety and freedom.
spetta a voi garantire la loro sicurezza e libertà.

it is up to you, the writer, which voice to use.
sta a te, in quanto autore, decidere quale forma verbale usare.