Not be a muggle, basically. Bellatrix will never tolerate anyone who isn't magical. Malfoy isn't any better. He isn't as crazy as she is. At least he wasn't. I'm out of time with these people. You'll probably get better information from Snape or Remus. Bellatrix is my cousin, and she's an absolute nutter. She'll kill you as soon as look at you.

There are protection spells and what not, but that won't help you. If you're quick, you may be able to dodge.