Yes, there are. You can find some on popular fanfiction websites. Just search for 'bella swan and naruto uzumaki' and you'll likely come across various stories that combine the two worlds in interesting ways, like having Bella end up in the Naruto universe or Naruto somehow ending up in the Twilight realm.
There are quite a few. Some fanfiction might focus on a crossover adventure where Bella and Naruto team up to fight a common enemy. For example, they could face a new kind of vampire - ninja hybrid threat. These stories often play with the different powers and personalities of the two characters, creating unique and engaging plots.
Chapter 339, "Today's Windfall Luck!", is the clearest early answer because it turns Li's situation into a concrete plot event.
Chapter 403, "Neither Jiang Lijiang nor Jiang Yan Came?", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. Early on, Now our helicopter has arrived above the harbor in Yan City, and....
Chapter 788, "Don’t be so fierce, I'm scared", is the clearest early answer because it turns Lu Yafei's situation into a concrete plot event. It opens with Song Xue covered her mouth in shock. and closes on I really did not push the auntie that day; maybe the living room....
Chapter 232, "He's a Pure Man! Purebred!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with But soon, she suppressed this strange feeling and slowly began to...
Chapter 784, "Slander Brother Yang Without Any Proof?!", is the clearest early answer because it turns Weibo's situation into a concrete plot event. The chapter turns that into something concrete by moving from Could the person she saw right in front of her have been all an act?"...
Chapter 429, "Is There Such a Good Thing?!", is the clearest early answer because it turns Yu Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with [What's going on?]" "[What happened, why is Team G causing a...
Chapter 406, "Barely Considered Living", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with With the help of government officials, Jiang Li and Jiang Yan quickly...
Chapter 542, "He is My Ideal Type", is the clearest early answer because it turns Shang Shaojing's situation into a concrete plot event. It opens with Before long, the official account of "Wilderness Survival" posted a...
Chapter 474, "Handcrafted Wooden Bed", is the clearest early answer because it turns Bai Lu's situation into a concrete plot event. The chapter turns that into something concrete by moving from Although everyone besides Jiang Li and Shang Shuyue was red-faced and...
Chapter 427, "Wearing Slippers onto the Stage", is the clearest early answer because it turns Jiang Shixu's situation into a concrete plot event. Early on, He was eager to break free, but Jiang Shixu, the skinny little guy,....