to protect yourself from sth or to protect yourself against sth
+ disease, harm, cold保护自己免受…
What can women do to protect themselves from heart disease?女性怎样做才能使自己不得心脏病呢?
one of the best ways for countries to protect themselves against erratic behaviour by the financial markets各国保护自己免受反复无常的金融市场影响的最佳方式之一