Which gas saves us from the harmful ultraviolet radiations coming from the sun?

Which gas saves us from the harmful ultraviolet radiations coming from the sun?

کون سی گیس ہمیں سورج سے آنے والی نقصان دہ بالائے بنفشی شعاعوں سے بچاتی ہے؟
Explanation

The ultraviolent rays are filtered through Ozone Layer.

The ozone layer, often known as ozone shield is a part of Stratosphere.