How are we supposed to read the word with the diamond and line under in 11:41 and the word with similar signs in 12:11?

Question
Assalamu alaykum,
How are we supposed to read the word with the diamond and line under in 11:41 and the word with similar signs in 12:11?  What is so special about those two words?

Answer
Wa alaikum assalaam wa rahmatullahi wa barakaatuh,
The diamond symbol is there to tell you there is something special about this word for the recitation of Hafs 'an 'Aasim, or for all of the qiraa'aat.
In Hud 41, we read the word with imaalah () on the fathah on the and the alif which follows the , so the fathah is read as in between a fathah and a kasrah and the alif as in between an alif and a . Please see:
http://www.abouttajweed.com/words-hafs-an-aasim-min-tareeq-ash-shatibiyy/special-words-for-hafs-an-aasim-by-the-way-of-ash-shaatibiy.html

In Yusuf aayah 11, we can read the word two ways, either with merging of first of the two of the letter into the second with a circling of the lips after pronouncing the while prolonging the ghunnah, or with reading of both of the two  , the first with a dhammah, read quickly with only 2/3 of the time of a normal vowel count, and the second read normally with a fathah and normal timing for that.
Please see the following link for more details:
http://www.abouttajweed.com/words-hafs-an-aasim-min-tareeq-ash-shatibiyy/special-words-for-hafs-an-aasim-by-the-way-of-ash-shaatibiy-3.html   .

Wa assalaam