The most common and straightforward way:
* Джессика (Dzhessica)
Other options:
* Джес (Dzhess) - A shortened version, like "Jess."
* Ессика (Essika) - This is a more phonetically accurate way to say "Jessica" in Russian, but it's not as common.
It's important to note that the "J" sound in Russian is often pronounced more like the English "DZH" sound.
Ultimately, the best way to say "Jessica" in Russian depends on the context and your personal preference.