“金融恐慌”常见的英文表达是 "financial panic"。
例如：
The financial panic of 2008 had a profound impact on the global economy.（2008年的金融恐慌对全球经济产生了深远影响。）
Governments usually take measures to stabilize the market during a financial panic.（在金融恐慌期间，政府通常会采取措施稳定市场。）