The phrase "act with discretion" is correct and usable in written English.
You can use it to indicate that something should be done in a careful and judicious manner. For example, "When responding to this delicate situation, please act with discretion."
It went on to warn the US and its "puppets" to "act with discretion if they want to evade the historic moment of death".
Generally, fiduciaries provides highly specialized services and are empowered by a principal that engages them to act with discretion on their behalf.
We will act with discretion and make reasonable concessions without too much difficulty.
Act with discretion, restraint and a sense of mystique.
Jonathan Aitken and Jeffrey Archer have both acted with discretion and some humility since leaving prison and people have been rightly willing to overlook their convictions.
Unlike in 1987, when a military coup led by then-Colonel Sitiveni Rabuka removed from office a predominantly Indian-backed government, this time the army has acted with discretion.
Miss Hungary 2013, Kata Sarka, contradicts Mr. Trump's claim that he acted with discretion at the Ritz-Carlton Moscow in 2013.
They are nevertheless expected to act with greater discretion and public decorum than private citizens, and an excess of power or an abuse of office for political purposes renders a civil servant instantly liable both to statutory regulations and to severe internal disciplinary proceedings.
Barroso, however, hit back at the criticism, insisting he would act with integrity and discretion in his role.
By turns, the approaches instruct U.S. managers regarding why and how they should (when negotiating with Chinese counterparts): embrace the unusual as normal; begin with hard ends in mind; anticipate/prepare for conflict; never resist resistances, [instead] always retreat gracefully; disclose with discretion; act like ladies and gentlemen; and never die with bullets in [their] guns.
That certainly leaves the Obama administration with discretion to act as well".
