Just in case it was not obvious already -
Use LTspice's "opamp2" symbol with this model, after making the change to the model file.
Change the name next to the symbol from "opamp2" to "OPA891".
Also add this line:
.lib OPA891_Movel_V1p1.lib
to your schematic. Keep that model file in the same directory with your schematic - or move it to one of your User-defined Lib. Search Path folders.
Andy