This image of Phobos transiting Mars was taken by the Mars Colour Camera on 14 February 2015.
The image has a spatial resolution of 55 meters at a distance of 16,057 km from Mars. Larger image.

https://media2.spaceref.com/news/2015/oophobos.4.jpg

These images of Phobos and Mars were taken by the Mars Colour Camera on 14 October 2014 at a spatial resolution of 550 meters. Larger image.

Imagery source: Mars Orbiter Mission Mars Atlas.