The word dicing does have as a secondary meaning "playing at dice," as this example from Kris Yon, How to Start a Hobby in Collecting Dice (2014) indicates:
The Romans were passionate gamblers, especially at the peak of the Roman Empire,and dicing was common though forbidden except during the Saturnalia. Horace derided youths who wasted time on dicing instead of horse-chasing. ... Tacitus stated that the Germans were passionately fond of dicing, so much that they would stake their personal liberty when bankrupt. During the Middle Ages, dicing became a favorite pastime of knights, who formed dicing schools and guilds.
Nevertheless, the normal English way to describe casting dice during a game is not "dicing," but "throwing the dice" or "rolling the dice." I believe that the expression "shake, rattle, and roll," which was used as the title of a hit song by Big Joe Turner in 1954 refers to the process of casting dice, too.
If you want to delight a bunch of U.S. English speakers in the midst of a lively game of Yahtzee, I recommend that—instead of announcing "Dicing!" as you shake up the cup of dice—you say (in your best Swedish accent) "Rolling them bones!"