Hi,
model.evaluate(.) requires a Keras model but TF-TRT is a TensorFlow model.
The simplest way is to do the inference and compare the output with the testing label manually.
Some TF-TRT inference examples can be found in the below link:
https://docs.nvidia.com/deeplearning/frameworks/tf-trt-user-guide/index.html#worflow-with-savedmodel
Thanks.