Display Screen or Portion Thereof with an Animated Graphical User Interface

FIG. 1 is a front view of a first image in a sequence of a display screen or portion thereof with an animated graphical user interface showing our new design.

FIG. 2 is a second image in the sequence thereof.

FIG. 3 is a third image in the sequence thereof.

FIG. 4 is a fourth image in the sequence thereof.

FIG. 5 is a fifth image in the sequence thereof.

FIG. 6 is a sixth image in the sequence thereof; and,

FIG. 7 is a seventh image in the sequence thereof.

The broken lines illustrate portions of the display screen with an animated graphical user interface and a user's hand that form no part of the claimed design.