Is the prayer valid if the shadow of a person appears on the door and curtain in front of the worshipper during prayer, knowing that there is no sutrah in front of him?

The ruling on the Sutrah for the worshiper has been previously explained, and that the passing of a woman or anyone else in front of him does not invalidate the prayer. If the passing itself does not invalidate the prayer, then the passing of a shadow, by extension, is even less likely to have an effect.