Even if you are already immune to temptations, like you always surpass them with the help of our Lord, still be careful not to fall. Make sure that you don't also fall into sin and condemnation. No matter how strong you are, we are still at risk for fall. Everyone of us! Stand on guard always.
Regardless of the source of temptation, it will not be overtaken beyond human resistance. God will not let you be tempted beyond your ability. Every temptation has its way out. That is how God is faithful to us, He knows every detail. He knows what's for your good. You just have to come boldly into His presence for help and guidance in everything that you do.