guard against

To guard against such an eventuality, the law provides that, even though ALJs are employees of the executive branch hired by or with the approval of department heads, once hired, they enjoy special employment protections—they may not be fired, suspended, demoted, or reduced in pay except for “good cause” determined after a hearing before the Merit Systems Protection Board.

In contrast, while the Principality Stadium roof will guard against the elements for the 80 minutes, for the hosts it is impossible not to view the game in the wider context of the storm clouds gathered over Welsh rugby.

But she also says that there's a need to guard against making such issues a question of morality.

Ukraine's President Volodymyr Zelensky has called for the creation of an "army of Europe" to guard against Russia as he suggested the US may no longer come to the continent's aid.

In addition to First Amendment protection afforded to all public employees, many federal statutes have specific built-in protections for agency workers, to stabilize the federal government and guard against the whims of politicization.