The Chamber of Auditors of the Czech Republic is a standard setter in the area of assurance standards. As an IFAC member the Chamber has adopted all pronouncements issued by the IAASB. These pronouncements cover almost all engagements and can be found here (see lower part of the page).
Besides, there are few standards that cover specific engagements that auditors carry out according to specific Czech law. These standards are marked with prefix "AS" and can be found here (Czech text only).