How do I get closest particle?

Hello, I am currently working on a small project and I am currently stuck as I don't know how to find closest particle. The thing I want to achive here is that enemies will dodge the particles (bullets). I have already found this (source) :

 // Find the name of the closest enemy
 
 using UnityEngine;
 using System.Collections;
 
 public class ExampleClass : MonoBehaviour
 {
     public GameObject FindClosestEnemy()
     {
         GameObject[] gos;
         gos = GameObject.FindGameObjectsWithTag("Enemy");
         GameObject closest = null;
         float distance = Mathf.Infinity;
         Vector3 position = transform.position;
         foreach (GameObject go in gos)
         {
             Vector3 diff = go.transform.position - position;
             float curDistance = diff.sqrMagnitude;
             if (curDistance < distance)
             {
                 closest = go;
                 distance = curDistance;
             }
         }
         return closest;
     }
 }

but I have no idea how to make it work with particles.

Thank you for all answers and ideas :) .